The M1 Garand was a U.S. semi-automatic rifle. It was a .30-caliber version that saw widespread use in World War II and the Korean War.

The MG 34 is indeed an air-cooled machine gun, one that was used by the Germans. It was light enough to be lugged by a single soldier and at 900 rounds per minute, it had an incredible rate of fire.

The M1911 was designed by American John Browning. The .45 caliber pistol was in high demand during World War II -- millions were produced for Allied forces.

The Lee-Enfield No. 4 Mk 2 rifle was produced mostly for the United Kingdom. There are several versions of this rifle, which has been reproduced more than 17 million times.

The Ma Deuce is the M2, or the Browning .50 Caliber machine gun. These heavy machine guns were successfully used by Allied forces all over the world.

In a war where speed mattered, the Allies needed rifles with a faster firing rate. The Garand could shoot at nearly 50 rounds per minute.

The S.T. grenades were so-called sticky bombs. Soldiers cracked them open to expose a sticky residue and then threw them at passing vehicles. The grenades would stick…and then explode.

The Type 97 was the standard Japanese grenade. These models were plagued with unreliable fuses that made them hazardous to the user.

The MP 40 typically used a 32-round magazine. When soldiers (incorrectly) grabbed the magazine to stablilize their aim, the gun often jammed.

The U.S. military adopted two versions of the so-called Tommy machine gun. Around 1.5 million of these famed guns were made during the war.

The U.S. launched the first Gato-class subs in 1941. The subs were extremely successful against Japan -- America sank countless tons of Japanese cargo using Gato submarines.

The PIAT stood for Projector, Infantry Anti-Tank. Infantry soldiers could use the system to launch 2.5-pound bombs to disable or destroy enemy tanks.

Portable, No. 2 British flamethrower had a life preserver-shaped fuel tank that led to the Lifebuoy nickname. Fully loaded, the system weighed more than 60 pounds, creating a significant burden to the shooter.

The Breda Mod. 42 was an anti-tank mine used by Italian armed forces. It was made in two versions, an explosive type and an incendiary type, both of which were used during the war.

The U.S. Mk II was filled with TNT. It wasn't a concussion grenade. Instead, it was made to fragment in order to cause maximum mayhem.

The British De Lisle carbine had a built-in noise suppressor, making it extremely quiet. Its low noise meant it was perfect for special operations forces that relied on speed and surprise.

The Gangster gun was the Winchester Model 1897, a shotgun that was widely used during both world wars. Known for its reliability, it was most often deployed in 12- or 16-gauge.

Patton, the famous U.S. war hero, called the M1 Garand rifle the greatest implement of battle ever devised. The U.S. made more than 5 million of these guns during World War II.

The Enfield No. 2 was a top-break revolver produced from the 1930s to the 1950s. World War II versions had automatic ejectors that made for quick and easy loading.

The Karabiner 98k was the German standard rifle throughout the war. It was prized for its reliability and its accuracy of more than 550 yards.

Japan deployed the Type 99 mines as anti-tank weapons. Large metal vehicles triggered the fuze, and after a 5- to 10-second delay, the mine would explode.

The M6 was a type of bazooka, a portable rocket launcher. Bazookas were often used to destroy tanks or buildings.

Although it was a solid assault rifle, the StG 44 was too late to the party to make much of a difference. By the time most of these rifles hit the battlefield, Nazi Germany was already doomed.

Finland created the Suomi KP/-31, which gained a reputation as one of the best submachine guns used in the entire war. It was expensive to make, but its fast firing rate and great accuracy made it a fearsome weapon.

Sharpshooters armed with the 98k were known to hit targets up to 3,200 feet (1,000 meters) away. Germany produced more than 130,000 sniper-specific versions of this rifle.

The Type 100 submachine gun saw its first service starting in 1942. Like many other World War II guns, it had an exceedingly simple design so that it could be produced quickly and cheaply.

The Sten guns were cheap, mass-produced submachine guns meant to quickly replenish weapons captured by Axis forces. Unfortunately for the Allies, they were also inaccurate and unreliable.

The USSR outfitted its soldiers with a number of type of PPS submachine guns. Roughly 2 million of the guns were made during World War II.

As Axis forces ran out of resources and manufacturing capabilities, they desperately looked for cheap and easy-to-make weapons designs. The MP 3008 machine gun was simple, inexpensive and not very effective.

The RGD-33 was too complex, both for manufacturers and for end users. It also sometimes sent shrapnel flying farther than the users could throw it, endangering friendly soldiers.