well... start... it's not hard... even in the desert with no running water... as long as you have a LOT of 5 gallon jugs!
Hair - normally keep it the same, sometimes i slick it back. Most of the time its shaved on the sides long on top.
Nails- nails are disgusting and keep mine short at all times. Id burn off the nail bed with acid if i could.
Trimmimg- I trim my pubes do i either look like Jumanji nor a prepubensent boy.
Shaving- needless to say I dont really have to because me growing facial hair is like watching a 13 year old grow facial hair. Its like two hairs. But whatever.
B vs. S - I dont take baths in the barracks. Those tubs are pretty gross. I try to shower twice a day. Morning is to freshen up, hot water wake up. Evening to get clean wash everything.
Scents - I dont normally wear cologne unless I'm going out to the bar or a setting where im probably going to talk to people i havent met. I wear scented deordortant too. Ive never had somebody complain I smell bad or overly put on too much.