Then they were on their way as instructors to the front or to the other flying schools .
From that time on , hundreds of young men passed through Selfridge Air Pilot School for the four weeks of training which qualified them for a commission .
Then hundreds were on hundreds ' way as instructors to the front or to the other flying schools .
From that time on , hundreds of young men passed through Selfridge Air Pilot School for the four weeks of training which qualified them for a commission .