Because they worked, were within the limits of technology to make, economy to afford, and soldiers could be trained to use them.
FMJ
Mauser and Springfiled are two.
rifles and machine guns
paul
the tank
rifles
A long range German artillery weapon made by Krupp in WW1.
Because they are effective, accurate weapon.
broken pistolthe zeppelin was the least important weapon in ww1.
The U-Boat
broken pistolthe zeppelin was the least important weapon in ww1.
the maxim gun