Pistols: WWII pistols were largely inaccurate and not really improved upon since WWI. Pistols were largely carried by infantry officers, tank crews, and pilots. All pistols were semi-automatic.
U.S.: The U.S. used the .45 M1911, considered the best of the pistols.
Germans: The Germans used a .38 Wealther, which was considered more reliable than the Lugers.
British: The British used the .38 Wembley revolver.
Russians: The Soviets used both the Nagent revolver 1895 and Tokarev pistol
Japan: The Japanese did not usually carry pistols and most officers had a ceremonial sword.
Rifles: Many of the armies entered WWII still using rifles from WWI. America began using by bolt action Springfield rifles and Russians were even using rifles from the Russo-Japanese conflict of 1904.
U.S.- By 1945, the M1 Garand had become the standard infantryman rifle. It was semi-automatic and sefl loading. It was so easy to assemble, every infantryman could break the rifle down and rebuild it in the dark. It was extremely accurate and unaffected by weather.
British: The British used the bolt-action Lee Enfield No. 4 and 5
Japan: Japanese used the Arisaka, which was a copy of the German Mauser rifl 38" long and used as a sniper weapon when telescope sight added.
Germany: The German used both the Gewehr and Karabiner 98K rifle, which fired a Mauser cartridge 7.92x57mm.
The Thompson gun had its origin at the end of world War 1. It was the notorious weapon of choice for 1930's gangsters when known as the "Tommy" gun.The gun was fully automatic.
U.S.: Thompson was issued to non commissioned officers. The 50 round clip was used instead of the drum clip that's commonly seen. It was largely ineffective in jungles because of its low velocity and was used by marines the Pacific and Okinawa.
British: The British commandos either used the Thompson or their own version. the Sten.
Russia: The Soviets used the PPSh-41 selective fire submachine gun using an open-bolt, blowback bolt. Made largely of stamped steel, it can be loaded with either a box or drum magazine, and fires the Tokarev pistol round.
Germany: The Germans largely used the devastating MP40. They also used the Sturmgewehr (storm rifle) in the Eastern front.
Machine guns are a hybrid falling between small arms and traditional artillery. Small arms are usually represented as portable and hand held by an individual soldier. With the possible exception of the light machine gun, any weapons system that requires a crew to carry and operate will fall outside the domain of small arms.
U.S.: The United States used the Browning Automatic Rifle (BAR). The Browning Automatic Rifle was issued as a squad level machinegun, meaning that small units now had the ability to form an effective base of fire while maneuvering and attacking the enemy. It gave the soldiers of WWII an advantage that they desperately needed in the previous war, and proved to be an extremely effective firearm. The BAR was so effective that it was still in active use when the Vietnam war heated up.
British: The British used their own version of the BAR called the Bren.
Germany: The German MG 34 weighed 26 lbs. This heavy air cooled gun was used extensively. It fired 7.92mm at a rate of 800-900 rounds per minute.
Russia: The Russians used the Ceska Zbrojovka (have fun pronouncing that) light machine gun. Built by Czechslovakia, who also built the British Bren, the Ceska Zbrojovka was used extensively by the Russians during WW2.
These are all the weapons you're likely to encounter in Call of Duty: WWII. Obviously, there will also be artillery, hand grenades, tanks, aircraft, and ships within the game. We can tackle that in a different article. Which gun are you most looking forward to using? The MP 40 was always my favorite.