Most of the same ways as in WW2: They were originally most widely used as Balloon Busters to destroy enemy spotter hot-air balloons, which led to dogfights between them, and developed fighter planes. There were also bombers, though that role was not as big as in WW2. And some military ships carried pontoon planes on lift cranes for both observation and later, torpedo duty. The treaty ending WW 1 specified that all the German Fokker D-7 fighter planes had to be surrendered, a very unusual requirement.
Dozens of different aircraft were developed and used in WW1. There wasn't a single airplane type.
The airplane.
Germany and the Austro-Hungarian Empire both used Pfalz.
Bristol F2b
Lighter than air Balloons and the airplane.
world war 1
TankMachine GunMustard Chlorine GasHand GrenadeFighter Airplane
some new weapons that were used were the machine gun, the tank, the flamethrower, and the Airplane was now used for battle
Airplane's
What wartime technological developments contributed to the fighter as a military type of airplane in world war I
Airplanes were excellent for reconnaissance and later bombing and intercepting enemy aircraft.
Many airplanes were developed during WW1.