After the pilots had been trained, it was necessary to have fighter aircraft for them to fly. Early on in the war, still before the production of "good" airplanes, pilots either flew larger bombing aircraft like the Avro or BE(Bleroit experimental), or early single seaters such as the Thomas-morse or a Morane Saulnier. Obviously these are just a few of them, but those were some of the main ones. Morane made many types of aircraft, but probably the most famous of them was the Morane Saulnier Bullet. The Morane Saulnier Bullet, also known as the Morane Saulnier type N, was a single seat mono-plane used at the beginning of WWI. Certainly not the fastest plane ever made, it maxed out at 90 miles per hour and it's engine produced only 80 horsepower,
