In addition to machine guns, bomber gunners also trained with a variety of other weapons, including:
* 20mm cannons: These were larger and more powerful than machine guns, and they could fire a 20mm shell at a muzzle velocity of approximately 3,600 feet per second. Cannons were typically used to attack enemy aircraft and ground targets.
* 50-caliber machine guns: These were even larger and more powerful than 20mm cannons, and they could fire a .50-caliber bullet at a muzzle velocity of approximately 3,000 feet per second. .50-caliber machine guns were typically used to attack enemy aircraft.
* Bombs: Bomber gunners also trained with a variety of bombs, including high-explosive bombs, incendiary bombs, and fragmentation bombs. Bombs were typically used to attack ground targets.