barbed wire, flamethrower, mounted machine guns, tanks, submarines, hand grenades, gases and airplanes.
The fighter aircraft, bomber aircraft and tank were all introduced and extensively developed in WW1
Two military advances first used during WW1 were weapons and tactics.
Arms Race
The first fighter aircraft were developed in Britain, France and Germany during WW1
machine guns tanks poison gas submarines airplanes
Many airplanes were developed during WW1.
Nuclear weapons
Nuclear weapons
Nuclear weapons
Airplanes were used well before WW1 started. Their use as weapons wasn't developed after the war started. The first aerial bombing occurred Nov 1911 by Italian pilots. They bombed Turkish troops during the Italo-Turkish War. During WW1, they were used, initially for recon, then bombing and dogfighting.
Most of it was spend on Guns, Shelters, Food, weapons and alot more.
To provide vital supplies, like food, clothing, weapons, and troops.