When you click the strategy button in the unit design screen, it supposingly tells you the number in service. I discovered that the number doesn't deduct the units blown up inside a cargo ship (figured that out because I just lost 180 troops that way! ). Please fix.
__________________
A propeller is just a big fan in front of the plane designed to keep the pilot cool. Want prove? Stop the prop and watch the pilot break out in a heavy sweat!