I agree with Jim and the others ref this. Unless your face falls off every time you shave, then you shave. A beard in afghanistan, even a week without shaving, is unbearable, especially during the summer months. yes, at times you may not shave. This is based on water rationing, extended patrols etc. But as soon as these limitations are gone then you run a blade over your face.
I remember last year when the Vandoo BG showed up and everywhere you looked there were beards, even some of the women! Soldiers weren't doing up helmets properly because of their beards properly because of their beards, they weren't maintaining them to CF regulations, they looked unkempt and stupid. When the order came down from TFK HQ to shave there was outrage. yet, the soldier shaved and low and behold, they were fine.
For some reason soldiers think that just because they are in Afghanistan they don't need to shave. Where this mentality comes from I have no idea. But it is a silly mentality. Soldiers and leadership have bigger issues to worry about than shaving. Like I said earlier, unless your face falls off every time you shave THEN SHAVE.