Alexander B,
There is a thread on here about the differences between Military and Civilian flying that hits most of the high points like Attitude vs Performance flying etc. And the fact that the aircraft are a platform for something else (weapons etc) vs something just to get from A to B (unless your a trashy).
But overall i think it is more of an Attitude difference in how we go about business. I heard a good statement from a QFI that sums it up pretty well - "Close enough is never ever good enough." Which anybody who has been through pilots course will tell you rings very true! Military flying is all about striving for perfection, especially if you want to fly fast Jets!