Viking Berserkers used highly effective weaponry to compliment their exceptional battlefield aggression. In the hands of the fearsome Vikings the Dane axe and double-sided sword hacked their way through opponents throughout a large swath of Europe.

Using techniques that are only known in Japan, it is claimed that the Japanese sword is the best instance of metalworking in the world.

The elite units of the Byzantine Army, the Varangian Guard, served as personal bodyguards to the Byzantine Emperors, and originated primarily from Scandinavia and England. Along with the prowess in combat they wielded highly effective weapons.

Eagle Warriors were the elite shock troops of the mighty Aztec Empire and they fought war the Aztec way - trained not to kill but capture their enemies. Their main weapon was the ingenious macuahuitl, which used obsidian to tear through flesh.

Just as the US Navy Seals have their super-elite Team 6, so the Spartans have their own best of the best, the Krypteia, or Secret Operations Force. As part of their initiation they must stealthily and successfully assassinate an unsuspecting target.

The Ninja, or Shinobi warrior, developed a unique set of tactics that the samurai could not employ because of their honor code. Ninjas were free to conduct what today would be described as black ops, such as assassinations, spying, and sabotage.

An elite warrior class, the Koa, emerged in Hawaii amid constant warfare between the islands and its leaders. The Koa practiced a punishing martial art called Lua and sought to enrich themselves through their vanquished enemies' life force.

The elite special forces of ancient Germany, the ‘Ghost Warriors’, had an effective array of weapons when fighting, including the spear, the club, the slingshot, and javelin.

A dagger experts explains the three different types of daggers: the stabber, the slasher, and combo slasher/stabber. Watch demonstrations of each type.

The Janissaries of the Ottoman Empire were highly trained killers taken from their homes at a young age as part of a blood tax, who distinguished themselves in battle, notably during the siege of Constantinople of 1453.

In his drive to expand his empire towards India Alexander the Great's biggest obstacle is keeping his supply lines traversing Afghanistan secure. US and British forces today face the same challenges.

At the beginning of the Battle of Shinohara in late 12th century Japan each side selects their champion for a one-on-one duel, and to the surprise of the vanquished champion his opponent reveals that she is a woman.

The Roman invasion of present-day Great Britain was similar to that of the Normandy invasion in terms of the relative scale and risks involved in an amphibious assault across the English Channel.

While the Scottish were greatly outnumbered by the English army, Sir William Wallace used the Scottish terrain to his advantage.

It is posited that 9th century Vikings conquering the kingdoms of England had the upper edge in battle because they believed that the more they killed the better their standing would be in Valhalla.

The Kung Fu Nun imitates nature to develop a figthing style that is designed to take down a bigger, stronger, and faster opponent.

It is posited that 9th century Vikings conquering the kingdoms of England had the upper edge in battle because they believed that the more they killed the better their standing would be in Valhalla.

An elite warrior class, the Koa, emerged in Hawaii amid constant warfare between the islands and its leaders. The Koa practiced a punishing martial art called Lua and sought to enrich themselves through their vanquished enemies' life force.

The Ninja, or Shinobi warrior, developed a unique set of tactics that the samurai could not employ because of their honor code. Ninjas were free to conduct what today would be described as black ops, such as assassinations, spying, and sabotage.

The Roman invasion of present-day Great Britain was similar to that of the Normandy invasion in terms of the relative scale and risks involved in an amphibious assault across the English Channel.

Using techniques that are only known in Japan, it is claimed that the Japanese sword is the best instance of metalworking in the world.

While the Scottish were greatly outnumbered by the English army, Sir William Wallace used the Scottish terrain to his advantage.

The Articles of Confederation proved to be more trouble than help, with individual states all pushing their interests and agendas, to the point of threatening the country as a whole.

There are many misconceptions surrounding our understanding of General George Armstrong Custer and his final campaign against the Plains Indians but the actual facts are more compelling than the fiction.

George Washington was preceded by several other Presidents of the United States.

In 1932 Rear Admiral Harry Yarnell mounted a simulated attack on Pearl Harbor utilizing carrier-based airplanes to expose how vulnerable it was to a carrier-borne attack. The Japanese took notice.

Paul Revere has been billed as America?s first action hero after his famous "Midnight Ride" but as truth would have it, he was part of a network.

Such were his powers of organization and logistics, Dwight Eisenhower was always kept away from combat because he made others better and more well-prepared for it.

Our vision of Paul Revere's midnight ride is all wrong, especially how it concludes.

When one thinks of America's first amusement ride Coney Island comes to mind, but another ride in Pennsylvania was attracting large crowds of thrill-seekers a decade before.

There were actually two boats of Pilgrims that left England for the US, and Plymouth Rock was not the first place the Mayflower disembarked.

A small anecdote from the crossing of the Mayflower to America reveals that an indentured servant, John Howland was swept off the deck of the ship during a storm, and that had he not been saved US history would have taken a different turn.