I don't recall if this has been mentioned before, but the website "The Chive" has a sub-area called "Brigade" which consistently has some of the best military photos on the net. Oh, and there might be an occasional photo of a girl or two...
Check it out - http://thebrigade.thechive.com/2013/12/29/2013-best-photos-of-the-day-part-1-50-hq-photos/
Check it out - http://thebrigade.thechive.com/2013/12/29/2013-best-photos-of-the-day-part-1-50-hq-photos/