U.S. Marines first test against Japanese defenses on Okinawa.

The crew of Apollo 11 had made history by landing on the moon and coming back to Earth in one piece. But before the celebrations could begin, they would have to spend some time in quarantine

Why the Apollo 11 Crew Was Quarantined Upon Return (2:59)

To prepare him for landing the lunar module, Neil Armstrong practiced on a training vehicle right here on Earth. It was designed to replicate flying within a gravitational pull that was 1/6 that of Earth

How Neil Armstrong Trained to Land the Lunar Module (2:13)

After the success of Apollo 11, NASA unveiled an ambitious agenda for more missions into space. But interest among the public was beginning to drop—and the Nixon administration balked at the high costs

Why Interest in Space Travel Waned After Apollo 11 (2:48)

The main innovation of the Nimitz-class aircraft carrier was the angled-flight deck. This enabled multiple planes to land and take-off faster, and at the same time.

How Angled Flight Decks Revolutionized Aircraft Carrier Flight Decks (2:53)

It's May 1940, and high above the skies of Dunkirk, a squadron of Spitfires is desperately trying to hold off as many German Messerschmitt as they can. The lives of 300,000 British troops depend on it.

These British Fighter Planes Ruled The Skies Of Dunkirk (4:00)

On August 9, 1941, a RAF squadron embarked on an aerial raid over France, led by a hotshot pilot named Douglas Bader. He had already shot down 21 enemy fighters and was hungry for more.

This Legless Pilot Was A World War II Flying Ace (3:40)

The P-38 almost single-handedly drove back the Germans as they attempted to keep their North Africa armies supplied. In just one month, the Allies shot down over 400 German planes, while losing only 36.

Germany suffered big losses at the hands of the P-38 (3:24)

Henry Ford spent the majority of the war as a pacifist. By 1917, however, his state-of-the-art assembly line was churning out vital engine parts to feed the war machine.

How Henry Ford went from pacifist to major supplier of World War I (2:56)

The P-38 featured a revolutionary design that enabled it to travel higher and faster than any other American fighter plane during the 1930s. It did this with huge, in-line engines and a super turbo charger.

How the P-38 flew faster and higher than its rivals (2:57)