Ski commandos battle through storms and snow drifts; a tiny army in the Egyptian desert defeats a major invasion force; the Bayeux tapestry; the Naftun.

Ancient Roman navy SEAL technique of capturing enemy ships from underwater; Roman war dog units; the Mastiff; the samurai sword; the Horro is designed to protect cavalryman from arrow fire.

President Truman relieves Gen. MacArthur of duty; negotiations break a two-year stalemate.

United Nations forces retreat from Chinese troops in freezing weather.

A commemoration of the Japanese attack on Pearl Harbor explores both well-known and lesser-known stories from a day that will forever live in infamy; experts, eyewitnesses and military minds show how this tragedy continues to shape the United States.

Regain independence and enjoy greater mobility with the compact design and long-lasting battery of portable oxygen.

See how a drug-free patch is helping people find relief-without medication.

Every five seconds there's a victim of identity theft; LifeLock helps alert, restore identity and reimburse lost funds-leading the way in protecting families every day.

President Truman relieves Gen. MacArthur of duty; negotiations break a two-year stalemate.

United Nations forces retreat from Chinese troops in freezing weather.

A commemoration of the Japanese attack on Pearl Harbor explores both well-known and lesser-known stories from a day that will forever live in infamy; experts, eyewitnesses and military minds show how this tragedy continues to shape the United States.

Ski commandos battle through storms and snow drifts; a tiny army in the Egyptian desert defeats a major invasion force; the Bayeux tapestry; the Naftun.

Ancient Roman navy SEAL technique of capturing enemy ships from underwater; Roman war dog units; the Mastiff; the samurai sword; the Horro is designed to protect cavalryman from arrow fire.

President Truman relieves Gen. MacArthur of duty; negotiations break a two-year stalemate.

United Nations forces retreat from Chinese troops in freezing weather.

A commemoration of the Japanese attack on Pearl Harbor explores both well-known and lesser-known stories from a day that will forever live in infamy; experts, eyewitnesses and military minds show how this tragedy continues to shape the United States.

Thirty years after the American Revolution, Britain threatens the independence and sovereignty of its former colonies; this war leaves the Capitol in flames, inspires the national anthem and sees the United States emerge as a world power.

China's master shipbuilders create some of the most powerful warships and greatest fleets of the ancient world.

Asian battle elephants and Europe's medieval knights in armor demonstrate people in the past understood the modern tank's principles combining protection, speed and firepower; ancient antitank weapon.

An unexpected North Korean attack drives United Nations forces to the sea.

Testing the force of naval guns and warships developed to overpower the enemy at sea.

China's master shipbuilders create some of the most powerful warships and greatest fleets of the ancient world.

Asian battle elephants and Europe's medieval knights in armor demonstrate people in the past understood the modern tank's principles combining protection, speed and firepower; ancient antitank weapon.

An unexpected North Korean attack drives United Nations forces to the sea.

Testing the force of naval guns and warships developed to overpower the enemy at sea.

Thirty years after the American Revolution, Britain threatens the independence and sovereignty of its former colonies; this war leaves the Capitol in flames, inspires the national anthem and sees the United States emerge as a world power.

Regain independence and enjoy greater mobility with the compact design and long-lasting battery of portable oxygen.

Trusted brand Jacuzzi Bath Remodel and interior designer Christina Hall share their secrets on how you can easily and affordably transform your bathroom into a gorgeous custom, safe, stylish space in 1 day! Call for a FREE quote & installation.

Regain independence and enjoy greater mobility with the compact design and long-lasting battery of portable oxygen.

Every five seconds there's a victim of identity theft; LifeLock helps alert, restore identity and reimburse lost funds-leading the way in protecting families every day.

An unexpected North Korean attack drives United Nations forces to the sea.

Testing the force of naval guns and warships developed to overpower the enemy at sea.

Thirty years after the American Revolution, Britain threatens the independence and sovereignty of its former colonies; this war leaves the Capitol in flames, inspires the national anthem and sees the United States emerge as a world power.

China's master shipbuilders create some of the most powerful warships and greatest fleets of the ancient world.

Asian battle elephants and Europe's medieval knights in armor demonstrate people in the past understood the modern tank's principles combining protection, speed and firepower; ancient antitank weapon.

An unexpected North Korean attack drives United Nations forces to the sea.

Testing the force of naval guns and warships developed to overpower the enemy at sea.

Thirty years after the American Revolution, Britain threatens the independence and sovereignty of its former colonies; this war leaves the Capitol in flames, inspires the national anthem and sees the United States emerge as a world power.

Personal profiles of two iconic leaders of the Civil War indicate how these men changed the course of American history.

Investigating history's most impregnable fortresses; the castle that helped create Great Britain; Cappadocia's invisible underground defensive systems; Mayan killer bee castle defenses; the Roman siege of Alesia in Gaul.

After Germany first weaponized chlorine, other countries also began to weaponize chemicals; the biggest land mine in history.

The evolution of the rocket, from the first Chinese "fire arrows" to the newest supersonic, heat-seeking missiles.

Watercraft; MedEvac helicopters; spy gear from the past; new gumshoe technologies; CIA masters of disguise.

Investigating history's most impregnable fortresses; the castle that helped create Great Britain; Cappadocia's invisible underground defensive systems; Mayan killer bee castle defenses; the Roman siege of Alesia in Gaul.

After Germany first weaponized chlorine, other countries also began to weaponize chemicals; the biggest land mine in history.

The evolution of the rocket, from the first Chinese "fire arrows" to the newest supersonic, heat-seeking missiles.

Watercraft; MedEvac helicopters; spy gear from the past; new gumshoe technologies; CIA masters of disguise.

Personal profiles of two iconic leaders of the Civil War indicate how these men changed the course of American history.

See how a drug-free patch is helping people find relief-without medication.

Every five seconds there's a victim of identity theft; LifeLock helps alert, restore identity and reimburse lost funds-leading the way in protecting families every day.

Paid programming.

Trusted brand Jacuzzi Bath Remodel and interior designer Christina Hall share their secrets on how you can easily and affordably transform your bathroom into a gorgeous custom, safe, stylish space in 1 day! Call for a FREE quote & installation.

The evolution of the rocket, from the first Chinese "fire arrows" to the newest supersonic, heat-seeking missiles.

Watercraft; MedEvac helicopters; spy gear from the past; new gumshoe technologies; CIA masters of disguise.

Personal profiles of two iconic leaders of the Civil War indicate how these men changed the course of American history.

Investigating history's most impregnable fortresses; the castle that helped create Great Britain; Cappadocia's invisible underground defensive systems; Mayan killer bee castle defenses; the Roman siege of Alesia in Gaul.

After Germany first weaponized chlorine, other countries also began to weaponize chemicals; the biggest land mine in history.

The evolution of the rocket, from the first Chinese "fire arrows" to the newest supersonic, heat-seeking missiles.

Watercraft; MedEvac helicopters; spy gear from the past; new gumshoe technologies; CIA masters of disguise.

Personal profiles of two iconic leaders of the Civil War indicate how these men changed the course of American history.

The next generation of combat aircraft includes the U.S. F-22 and F-35, the Eurofighter Typhoon, the Russian Su-35 and Su-37, and China's Chengdu J-10.

Giant airships delivered bombs to battlefields.

Green Beret Terry Schappert reveals the warrior culture of U.S. special operations forces dating to the Alamo Scouts, who operated behind enemy lines during World War II.

During the Cold War, much of the Soviet Union's economy goes into developing weapons.

It's possible that drug dependence played a role in Adolf Hitler's decisions and bizarre behavior.

Giant airships delivered bombs to battlefields.

Green Beret Terry Schappert reveals the warrior culture of U.S. special operations forces dating to the Alamo Scouts, who operated behind enemy lines during World War II.

During the Cold War, much of the Soviet Union's economy goes into developing weapons.

It's possible that drug dependence played a role in Adolf Hitler's decisions and bizarre behavior.

The next generation of combat aircraft includes the U.S. F-22 and F-35, the Eurofighter Typhoon, the Russian Su-35 and Su-37, and China's Chengdu J-10.

Prosvent is a doctor formulated blend of rejuvenating herbs and nutrients that help protect overall prostate health.

Every five seconds there's a victim of identity theft; LifeLock helps alert, restore identity and reimburse lost funds-leading the way in protecting families every day.

Trusted brand Jacuzzi Bath Remodel and interior designer Christina Hall share their secrets on how you can easily and affordably transform your bathroom into a gorgeous custom, safe, stylish space in 1 day! Call for a FREE quote & installation.

Paid programming.

During the Cold War, much of the Soviet Union's economy goes into developing weapons.

It's possible that drug dependence played a role in Adolf Hitler's decisions and bizarre behavior.

The next generation of combat aircraft includes the U.S. F-22 and F-35, the Eurofighter Typhoon, the Russian Su-35 and Su-37, and China's Chengdu J-10.

Giant airships delivered bombs to battlefields.

Green Beret Terry Schappert reveals the warrior culture of U.S. special operations forces dating to the Alamo Scouts, who operated behind enemy lines during World War II.

During the Cold War, much of the Soviet Union's economy goes into developing weapons.

It's possible that drug dependence played a role in Adolf Hitler's decisions and bizarre behavior.

The next generation of combat aircraft includes the U.S. F-22 and F-35, the Eurofighter Typhoon, the Russian Su-35 and Su-37, and China's Chengdu J-10.

For the science and psychology behind some of the greatest shots in military history, snipers deconstruct their missions, ranging from Vietnam to Iraq and Afghanistan; a Canadian sniper recounts hitting a Taliban fighter from 1.5 miles away.

The marksmen are strapped to a mechanical arm and sent soaring with the SP89; two competitors zoom down a zip line course.

Competitors blast clay birds mid flight with Benelli shotguns; the cross bow pits two competitors against each other.

The unsung story of America's Nisei warriors of WWII, the sons of Japanese immigrants who volunteered by the thousands after Pearl Harbor and served in a segregated regiment to fight in some of the bloodiest battles of WWII.

Exploring one of the most pivotal and important times in history and the amazing African American figures who were not only heroes in their own stories but in the nation's history.

The marksmen are strapped to a mechanical arm and sent soaring with the SP89; two competitors zoom down a zip line course.

Competitors blast clay birds mid flight with Benelli shotguns; the cross bow pits two competitors against each other.

The unsung story of America's Nisei warriors of WWII, the sons of Japanese immigrants who volunteered by the thousands after Pearl Harbor and served in a segregated regiment to fight in some of the bloodiest battles of WWII.

Exploring one of the most pivotal and important times in history and the amazing African American figures who were not only heroes in their own stories but in the nation's history.

For the science and psychology behind some of the greatest shots in military history, snipers deconstruct their missions, ranging from Vietnam to Iraq and Afghanistan; a Canadian sniper recounts hitting a Taliban fighter from 1.5 miles away.

Trusted brand Jacuzzi Bath Remodel and interior designer Christina Hall share their secrets on how you can easily and affordably transform your bathroom into a gorgeous custom, safe, stylish space in 1 day! Call for a FREE quote & installation.

Paid programming.

Every five seconds there's a victim of identity theft; LifeLock helps alert, restore identity and reimburse lost funds-leading the way in protecting families every day.

See how a drug-free patch is helping people find relief-without medication.

The unsung story of America's Nisei warriors of WWII, the sons of Japanese immigrants who volunteered by the thousands after Pearl Harbor and served in a segregated regiment to fight in some of the bloodiest battles of WWII.

Exploring one of the most pivotal and important times in history and the amazing African American figures who were not only heroes in their own stories but in the nation's history.

For the science and psychology behind some of the greatest shots in military history, snipers deconstruct their missions, ranging from Vietnam to Iraq and Afghanistan; a Canadian sniper recounts hitting a Taliban fighter from 1.5 miles away.

The marksmen are strapped to a mechanical arm and sent soaring with the SP89; two competitors zoom down a zip line course.

Competitors blast clay birds mid flight with Benelli shotguns; the cross bow pits two competitors against each other.

The unsung story of America's Nisei warriors of WWII, the sons of Japanese immigrants who volunteered by the thousands after Pearl Harbor and served in a segregated regiment to fight in some of the bloodiest battles of WWII.

Exploring one of the most pivotal and important times in history and the amazing African American figures who were not only heroes in their own stories but in the nation's history.

For the science and psychology behind some of the greatest shots in military history, snipers deconstruct their missions, ranging from Vietnam to Iraq and Afghanistan; a Canadian sniper recounts hitting a Taliban fighter from 1.5 miles away.

Civil War Gen. William Tecumseh Sherman stands as a hero in the North and as a villain in the South.

Targets fly in an extreme shooting gallery; halfway through the competition a rule change forces contestants to start evaluating their own teammates.

The teams try to blow up an ammo dump, using the legendary M1A rifle; one contestant's mistakes put his team in jeopardy; marksmen face an obscured targets challenge using the Glock 17 pistol.

Technology to lip-read gives sound to previously silent archive footage of Hitler.

A comprehensive picture of the African American experience during the Revolutionary War with the story of the war within the revolution through the eyes of some of the most crucial and significant African American figures.

Targets fly in an extreme shooting gallery; halfway through the competition a rule change forces contestants to start evaluating their own teammates.

The teams try to blow up an ammo dump, using the legendary M1A rifle; one contestant's mistakes put his team in jeopardy; marksmen face an obscured targets challenge using the Glock 17 pistol.

Technology to lip-read gives sound to previously silent archive footage of Hitler.

A comprehensive picture of the African American experience during the Revolutionary War with the story of the war within the revolution through the eyes of some of the most crucial and significant African American figures.

Civil War Gen. William Tecumseh Sherman stands as a hero in the North and as a villain in the South.

Paid programming.

Paid programming.

Every five seconds there's a victim of identity theft; LifeLock helps alert, restore identity and reimburse lost funds-leading the way in protecting families every day.

Paid programming.

Paid programming.

Technology to lip-read gives sound to previously silent archive footage of Hitler.

A comprehensive picture of the African American experience during the Revolutionary War with the story of the war within the revolution through the eyes of some of the most crucial and significant African American figures.

Civil War Gen. William Tecumseh Sherman stands as a hero in the North and as a villain in the South.

Targets fly in an extreme shooting gallery; halfway through the competition a rule change forces contestants to start evaluating their own teammates.

The teams try to blow up an ammo dump, using the legendary M1A rifle; one contestant's mistakes put his team in jeopardy; marksmen face an obscured targets challenge using the Glock 17 pistol.

Technology to lip-read gives sound to previously silent archive footage of Hitler.

A comprehensive picture of the African American experience during the Revolutionary War with the story of the war within the revolution through the eyes of some of the most crucial and significant African American figures.

Civil War Gen. William Tecumseh Sherman stands as a hero in the North and as a villain in the South.

For the science and psychology behind some of the greatest shots in military history, snipers deconstruct their missions, ranging from Vietnam to Iraq and Afghanistan; a Canadian sniper recounts hitting a Taliban fighter from 1.5 miles away.

Contestants compete with throwing knives and slingshots; in addition to the elimination challenge, another contestant suddenly goes home.

The remaining 13 contestants' ability to tell a friend from a foe is tested; rising tension threatens the strength of the teams.

The "Mail Call" host travels to the country to examine the tools and techniques used to oust terrorists.

World War II U.S. forces confront the Japanese on the ground for the first time at Guadalcanal in 1942.

Contestants compete with throwing knives and slingshots; in addition to the elimination challenge, another contestant suddenly goes home.

The remaining 13 contestants' ability to tell a friend from a foe is tested; rising tension threatens the strength of the teams.

The "Mail Call" host travels to the country to examine the tools and techniques used to oust terrorists.

World War II U.S. forces confront the Japanese on the ground for the first time at Guadalcanal in 1942.

For the science and psychology behind some of the greatest shots in military history, snipers deconstruct their missions, ranging from Vietnam to Iraq and Afghanistan; a Canadian sniper recounts hitting a Taliban fighter from 1.5 miles away.

Paid programming.

Paid programming.

Paid programming.

Paid programming.

The "Mail Call" host travels to the country to examine the tools and techniques used to oust terrorists.

World War II U.S. forces confront the Japanese on the ground for the first time at Guadalcanal in 1942.

For the science and psychology behind some of the greatest shots in military history, snipers deconstruct their missions, ranging from Vietnam to Iraq and Afghanistan; a Canadian sniper recounts hitting a Taliban fighter from 1.5 miles away.

Contestants compete with throwing knives and slingshots; in addition to the elimination challenge, another contestant suddenly goes home.

The remaining 13 contestants' ability to tell a friend from a foe is tested; rising tension threatens the strength of the teams.

The "Mail Call" host travels to the country to examine the tools and techniques used to oust terrorists.

World War II U.S. forces confront the Japanese on the ground for the first time at Guadalcanal in 1942.

For the science and psychology behind some of the greatest shots in military history, snipers deconstruct their missions, ranging from Vietnam to Iraq and Afghanistan; a Canadian sniper recounts hitting a Taliban fighter from 1.5 miles away.

A family from Baghdad and an American TV cameraman embedded in the U.S. Army give their perspectives on the Iraq war and its potential aftermath; host: Bob Woodruff.

Contestants compete with longbows; a team wins immunity; two competitors face off in a William Tell elimination challenge.

MacArthur launches a successful counteroffensive until Chinese troops intervene.

Frustrated by British forces' slow progress in Sicily, Patton ignores orders to stay by their side and pushes on to capture Palermo in 1943; Patton is relieved of command for slapping a pair of shell-shocked soldiers.

Tiny weapons may not sound impressive, but small can kill, and it can also be easily concealed; from a pocket pistol used by the police to a submachine gun wielded by a bodyguard, many of today's most effective weapons are smaller than ever.

Contestants compete with longbows; a team wins immunity; two competitors face off in a William Tell elimination challenge.

MacArthur launches a successful counteroffensive until Chinese troops intervene.

Frustrated by British forces' slow progress in Sicily, Patton ignores orders to stay by their side and pushes on to capture Palermo in 1943; Patton is relieved of command for slapping a pair of shell-shocked soldiers.

Tiny weapons may not sound impressive, but small can kill, and it can also be easily concealed; from a pocket pistol used by the police to a submachine gun wielded by a bodyguard, many of today's most effective weapons are smaller than ever.

A family from Baghdad and an American TV cameraman embedded in the U.S. Army give their perspectives on the Iraq war and its potential aftermath; host: Bob Woodruff.

Paid programming.

Paid programming.

Paid programming.

Paid programming.

Frustrated by British forces' slow progress in Sicily, Patton ignores orders to stay by their side and pushes on to capture Palermo in 1943; Patton is relieved of command for slapping a pair of shell-shocked soldiers.

Tiny weapons may not sound impressive, but small can kill, and it can also be easily concealed; from a pocket pistol used by the police to a submachine gun wielded by a bodyguard, many of today's most effective weapons are smaller than ever.

A family from Baghdad and an American TV cameraman embedded in the U.S. Army give their perspectives on the Iraq war and its potential aftermath; host: Bob Woodruff.

Contestants compete with longbows; a team wins immunity; two competitors face off in a William Tell elimination challenge.

MacArthur launches a successful counteroffensive until Chinese troops intervene.

Frustrated by British forces' slow progress in Sicily, Patton ignores orders to stay by their side and pushes on to capture Palermo in 1943; Patton is relieved of command for slapping a pair of shell-shocked soldiers.

Tiny weapons may not sound impressive, but small can kill, and it can also be easily concealed; from a pocket pistol used by the police to a submachine gun wielded by a bodyguard, many of today's most effective weapons are smaller than ever.

A family from Baghdad and an American TV cameraman embedded in the U.S. Army give their perspectives on the Iraq war and its potential aftermath; host: Bob Woodruff.

Actor and martial-arts champ Mark Dacascos explores the story of Miyamoto Musashi, the most-famous samurai in history, and trains in the weaponry and wisdom of Japan's great warriors.

President Truman relieves Gen. MacArthur of duty; negotiations break a two-year stalemate.

United Nations forces retreat from Chinese troops in freezing weather.

Soviet dictator Josef Stalin causes the suffering and deaths of millions of citizens while envisaging a grandiose architectural plan.

Norwegian raiders destroy a Nazi factory where Hitler was developing the atomic bomb.

President Truman relieves Gen. MacArthur of duty; negotiations break a two-year stalemate.

United Nations forces retreat from Chinese troops in freezing weather.

Soviet dictator Josef Stalin causes the suffering and deaths of millions of citizens while envisaging a grandiose architectural plan.

Norwegian raiders destroy a Nazi factory where Hitler was developing the atomic bomb.

Actor and martial-arts champ Mark Dacascos explores the story of Miyamoto Musashi, the most-famous samurai in history, and trains in the weaponry and wisdom of Japan's great warriors.

Trusted brand Jacuzzi Bath Remodel and interior designer Christina Hall share their secrets on how you can easily and affordably transform your bathroom into a gorgeous custom, safe, stylish space in 1 day! Call for a FREE quote & installation.

Regain independence and enjoy greater mobility with the compact design and long-lasting battery of portable oxygen.

Every five seconds there's a victim of identity theft; LifeLock helps alert, restore identity and reimburse lost funds-leading the way in protecting families every day.

Soviet dictator Josef Stalin causes the suffering and deaths of millions of citizens while envisaging a grandiose architectural plan.

Norwegian raiders destroy a Nazi factory where Hitler was developing the atomic bomb.

Actor and martial-arts champ Mark Dacascos explores the story of Miyamoto Musashi, the most-famous samurai in history, and trains in the weaponry and wisdom of Japan's great warriors.

President Truman relieves Gen. MacArthur of duty; negotiations break a two-year stalemate.

United Nations forces retreat from Chinese troops in freezing weather.

Soviet dictator Josef Stalin causes the suffering and deaths of millions of citizens while envisaging a grandiose architectural plan.

Norwegian raiders destroy a Nazi factory where Hitler was developing the atomic bomb.

Actor and martial-arts champ Mark Dacascos explores the story of Miyamoto Musashi, the most-famous samurai in history, and trains in the weaponry and wisdom of Japan's great warriors.

U.S. Marines and civilians find themselves under attack from Japan on a tiny Pacific island.

An unexpected North Korean attack drives United Nations forces to the sea.

Testing the force of naval guns and warships developed to overpower the enemy at sea.

The SAS makes bold raids against the enemy in the Falklands Campaign.

Germany uses a combination of disguised armed merchant vessels and surface warships to wreak havoc on Allied commercial shipping during World War I and World War II.

An unexpected North Korean attack drives United Nations forces to the sea.

Testing the force of naval guns and warships developed to overpower the enemy at sea.

The SAS makes bold raids against the enemy in the Falklands Campaign.

Germany uses a combination of disguised armed merchant vessels and surface warships to wreak havoc on Allied commercial shipping during World War I and World War II.

U.S. Marines and civilians find themselves under attack from Japan on a tiny Pacific island.

Every five seconds there's a victim of identity theft; LifeLock helps alert, restore identity and reimburse lost funds-leading the way in protecting families every day.

Paid programming.

Trusted brand Jacuzzi Bath Remodel and interior designer Christina Hall share their secrets on how you can easily and affordably transform your bathroom into a gorgeous custom, safe, stylish space in 1 day! Call for a FREE quote & installation.

The SAS makes bold raids against the enemy in the Falklands Campaign.

Germany uses a combination of disguised armed merchant vessels and surface warships to wreak havoc on Allied commercial shipping during World War I and World War II.

U.S. Marines and civilians find themselves under attack from Japan on a tiny Pacific island.

An unexpected North Korean attack drives United Nations forces to the sea.

Testing the force of naval guns and warships developed to overpower the enemy at sea.

The SAS makes bold raids against the enemy in the Falklands Campaign.

Germany uses a combination of disguised armed merchant vessels and surface warships to wreak havoc on Allied commercial shipping during World War I and World War II.

U.S. Marines and civilians find themselves under attack from Japan on a tiny Pacific island.

Fall of Richmond; Lee's harrowing retreat; surrender at Appomattox Court House; Lincoln's assassination; reconstruction.