Larry, remind me not to go to an Alabama boot camp. It sounds so barbaric lol. In any case I can think of better weapons for hand-hand combat than a straight razor:
-A sharpened chicken thigh-bone
-A sharpened toothbrush
-A pen
-A chair
-A can of pop in a sock
And you will be around firearms all the time.
The only concern I'd have is if someone decided to steal it, so I'd bring a couple of ugly looking ones. You could do a 2-pass shave in 5min if you cut out all the frills. Worst case scenario, shave the night before. You'll still have a cleaner-shaved face than people who just shaved, in the morning.