Yes
Bombing the enemy troops.
in ww1 bombing was popular.they used hot air balloons as it was cheaper to bomb.
If the question is "What in the First World War" then the answer is planes (Gotha's).
Bristol F2b
there were no airplanes in the word war 1. __ The use of airplanes in the military pre-dates WW1. Airplanes were used for recon, bombing missions and fighters.
the bombing of pearl harbour
Bombing and reconnaissance (scouting).
in world war 1 warfare was mainly fought in the trenches and in world war 2 there was alot of invasions and bombing.
Airplanes were excellent for reconnaissance and later bombing and intercepting enemy aircraft.
Yes, there were a number of Zepplin bombing raids on England during the war.
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.
1,ooo,ooo people got killed in the war