Nine daring and dangerous missions from World War II (and one from the Great War), ranging from the famous Dambusters raid to the less well-known actions such as the German assault on the Belgian fortress of Eben-Emael.

As the first men of the D-Day invasion force to parachute unsupported into Normandy, the Pathfinders were labeled a "suicide squad." They set up special radar sets and illuminating beacons to lead Allied airborne divisions into their drop zones.

They are the unsung heroes of the U.S. Navy. With a wrench in one hand and a rifle in the other, they build and fight. For close to 60 years, in war and peace, the Seabees have built the huts, ramps, roads, and runways.

They are the most feared and hated men on the battlefield, silent assassins who can kill with a single shot from miles away. Creep along undetected as these men surgically deliver swift death without warning, and learn why snipers are hunted.

During WWII, American tank crews duked it out with Nazi Panzers in a high-explosive duel to the death. The German tanks had thicker armor and better guns than the mainstay of the U.S. armored forces, the M-4 Sherman.

They dominated the Atlantic Ocean from Europe to the eastern coast of the U.S. They struck against Allied shipping with near impunity, holding England in a stranglehold for the first years of WWII--until sonar was developed.

Meet the glidermen of World War II--specially trained pilots and soldiers who went to war in canvas-covered, engineless aircraft at the vanguard of many Allied engagements.

In war, certain missions demand the most and constitute much of the legends of bravery. Journey back to the Second World War when fearless airmen manned the B-17's belly guns.