Masters of stealth, lords of destruction: the U.S. Navy SEALs are the most versatile special operations force in the world. SEAL teams smash their enemies from land, sea and air using cutting-edge combat tactics and state-of-the-art equipment. Now Weaponology traces the SEALs' development from search-and-destroy missions in the jungles of Vietnam to hunting the Taliban in the highlands of Afghanistan.

The United States Marine Corps is the ultimate combined arms force. This well-oiled military machine unites beach-assault vehicles, devastating air support and battle-hardened riflemen. Now Weaponology traces the U.S.M.C.'s development from its beginning as a group of shipboard warriors in the 18th century to the ultimate all arms force operating in Iraq today.

The Waffen S.S. were Nazi Germany's ultimate warriors -- earning their brutal reputation in blood during World War II. Adolf Hitler's elite units destroyed their enemies with futuristic weapons systems backed up by an unrivaled fanaticism. Weaponology takes you back through time to take a closer look at the men, machines and moments that shaped Hitler's henchmen.

The Army Rangers are the hammer and anvil of U.S. military might. Men of steel, forged in the fire of every major conflict from the beaches of D-Day to the streets of Baghdad, the Rangers are the elite assault-and-ambush team of the U.S. Army. Weaponology shows viewers how the U.S. Army Rangers always ride the cutting edge of military technology to get the job done.

Shadow warriors, the Green Berets are lords of unconventional warfare. Their mission is to train and raise armies behind enemy lines. On this episode, Weaponology explores how the Green Berets rose out the ashes of World War II to fight the clandestine conflicts of the Cold War and the post-Sept. 11 world.

With a motto that reads "Who Dares Wins," the SAS are at the cutting edge of global special forces operations. The SAS go in where it hurts to take out the trash using deep insertion behind enemy lines and have revolutionized the global war on terrorism.

With a bulldog spirit, the royal marine commandos are a pup that loves to bite. They are all-terrain tsunami, military chameleons who attack the enemy amphibiously, in the mountains, skies and on land.

Combat Engineers build with one hand, and destroy with the other. First onto the battlefield they have got the nuts, and bolts, to build bridges, blow up obstacles, diffuse landmines, take out bunkers and detect I.E.D's.

Weaponology looks at the genealogy of France's famous Foreign Legion. Which draws its ranks from other countries around the world.

Members of Russia's elite fighting force work in counter terrorist strike squads and special operations. Go behind the scenes of Russia's super soldiers and see why the world fears the word Spetsnaz!