Mary Kate, Mary Jane and Mary Ann were popular names during World War 2.
Panzer
Mitsubishi zero
The primary one they used was the Vickers machine gun.
Enigma.
That was the name of the first programmable electronic computer, and it was used to break codes used by the Germans.
During the first world war it was the Maxim machinegun. It was used heavily in the Gallipoli campaign and many others. The Maxim was the general issue machinegun of the "Axis" forces during the first world war.
'Tokyo Rose' was a generic name given by Allied forces in the South Pacific during World War II to any of approximately a dozen English-speaking female broadcasters of Japanese propaganda.
The French used the franc during World War II.
The common name for COCl2 is phosgene. It is a toxic gas that was used as a chemical weapon during World War I.
Mustard Gas Mines Barbed Wire Machine Guns
Well the most used name in the world is Mohammad. But personally, I wouldn't want to name my baby that. But yes Mohammad is the most used name in the world.
They were mostly used for the transportation of Jews to and from concentration camps during the Holocaust, which was during World War 2.