Jeeps and 2 1/2 ton trucks were most common.
DUKW
Well I was in world war 2 so I studied lots of things from science to math I studied how the vehicles that I used works.
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They used light armore cars which became known as jeeps.
There were many American vehicles in World War 2. These vehicles included the Army tanks, armored cars, cruiser tanks, infantry tanks, and armored personnel carriers.
For example the M3 Half track was Model #3 in the series
During World War 2, women would donate items that were made of metal to help with the war effort. The metal could be used to make weapons and vehicles.
Women that were in World War 2 did not fight in the war. The women did many of the other types of jobs such as being nurses and driving vehicles.
HumVee was not created until the 1970s and developed into what it is today. They barely had vehicles in World War 1. Most of the people had horses and carts and they hauled military supplies with carts.
Tanks and submarines were the two military vehicles that (to the best of my knowledge) were introduced during World War 1.
Mainly horses were used in World War 2. But donkeys were used in World War 1.
Tanks and different armoured vehicles.