I've normally turned fatigue off. Any commander of his command has too much to do and too much to worry about than to make sure who gets sleep and who doesn't. That's what the junior officers and NCO's are for.
The entire time I was in the navy, my commanding officers depended upon the rest of his staff to run the command efficently. There were times when they would get us out of bed with drills (or the real thing), and take a look at different watch bills, but other than that, the captain was not busy running around trying to figure out who needed rest or sleep!
