Originally Posted by
tanker
Not counting Reserve or Training Squadrons the Marines have 13 Fighter Squadrons and 5 Attack Squadrons for a total of 18 jet squadrons. On the non-jet side, again not counting Reserve or Training Squadrons. the Marines have 8 CH-53 squadrons, 17 Osprey squadrons, 7 Huey/Cobra squadrons, and 3 KC-130 squadrons. That is 35 non-jet squadrons each needing 2 pilots per aircraft
That last is a huge factor... many types have more than one pilot, and are staffed (squadron level) at more than one pilot/seat.
The OP should google service inventories and do the same math for the other services.
To account for different staffing ratios I would probably use these (SWAG) numbers unless somebody has better data, to account for the fact that some types are staffed at more than one pilot/seat.
Fighters: 1/aircraft
Helos: 2/aircraft
P3/P8: 3/aircraft
Mobility/Surveillance: 4/aircraft
Bombers/Others: 2/aircraft
Trainers have some first assignments but probably not a significant number.
Might be surprising which service offers best odds for fighters. Might be Navy... fighters are very central to Navy power projection and then have a lot of them.