I know they need support staff, but over 600 for each pilot ? :-/

when you consider that the pilots don't...
Do their own medicals
Drive their transport
Refuel the jets
Mend the jets
Service the jets
Pay themselves
Pay their taxes
Cook their own meals
Do their own Air Traffic Control
Do their own intelligence research
Load their own weapons
Allocate their own targets
Type their own Appraisals
Do their own weather forecasting
Pack their own parachutes
Service their own ejection seats
Fly their own rescue helicopters
Talk to themselves on the radio
Run their own stores system
Guard their own bases
Investigate their own "crimes"
Load their own aircraft
Train themselves
and every support "bod" requires their own "support"
and a probabaly a load more .. but I hope you get the idea ... in any organisation the "back room staff" easily outnumber the rest ..

600 per pilot is a much lower figure than it used to be .. due to this new fangled idea of "out-sourcing" ...

I can't comment on your pilot numbers figure but it seems rather low to me ..
