Yes, but since airplanes were still a very new technology at the time, it was far less effective than it would be later in World War II and subsequent wars.
Yes
Yes.
Observation/recon, bombing and fighter.
in ww1 bombing was popular.they used hot air balloons as it was cheaper to bomb.
Bombing the enemy troops.
Bombing of Braunschweig in World War II happened in 1944.
Bombing of Lübeck in World War II happened in 1942.
Bombing of Pforzheim in World War II happened in 1945.
Bombing of Darmstadt in World War II happened in 1944.
Bombing of Ulm in World War II happened in 1944.
Bombing of Königsberg in World War II happened in 1944.
Bombing of Bangkok in World War II happened in 1944.