I also recommend both as being universal in the care and feeding of Troops -- and how little it really takes in the way of neat high speed stuff to do the job -- if you know what you're doing. Amazon has both: Quartered Safe Out Here. Great read by a superb writer. With the Jocks. No punches pulled, he describes the bad and the good.

I'd also recommend:

The Right Kind of War. Marine Raider tale of WW II. Well done. Different Corps today but some things don't change...

Not A Good Day To Die. Afghanistan 2002, a how not to do it...