Note: Weapons listed were either made by Germany or for Germany but do not include weapons made from captured equipment or captured weapons later. World War 2 Weapons. World War 2 was the largest armed conflict in history, spanning the entire world and involving more countries than any other war, as well. This is a list of infantry weapons which were in mainstream use during World War II (–). Contents. [hide]. 1 Kingdom of Albania; 2 Commonwealth of Republic of China · Republic of Finland · The Third Reich (Nazi · Empire of Japan. Chatellerault Model LMG. SdKfz Panzer VI. Flammenwerfer 41 FmW Owen SMG Owen Machine Carbine. The "Military Factory" name and MilitaryFactory.