Sanitization is essential going into combat -- the North Vietnamese used personal information against crews during interrogation. You carry your dog tags around your neck and your ID card in your pocket, and that's it for personal possessions. During Desert Storm, the Jewish crews even had special dog tags made with their religion listed as Unitarian or something like that.
However, that can backfire if you do it on an exercise and then divert.
We had 8 jets divert from Heyford to the USAF base at Lakenheath when a snow storm hit the field about the time the last jet got airborne on the mass launch at the end of our NATO TAC EVAL in 1983. When they landed, they had nothing but their ID cards in their pockets -- no cash, no credit cards, no checks, no nothing. They couldn't even get something to eat when they landed there, no less toothbrushes or razors for the overnight without some form of payment. IIRC, some Lakenheath crews had to lend our guys cash just to get a burger at the bowling alley (which was the only place still open for food by the time they got things sorted). Our wing commander had to get on the phone to the Lakenheath wing commander just to get them rooms for the night.
OTOH, the Brits at RAF Valley on Anglesey in Wales (where I was diverted) met us at the four diverted jets with "diverted aircrew" kits including razors, toothbrushes, soap, shaving cream, etc., and allowed us to sign for the kits as well as dinner and drinks at their Officers Mess (they even held their sit-down, served, 4-course dinner 30 minutes for our arrival from the flight line), our rooms for the night, and breakfast the next morning (standard full English fried breakfast -- fried eggs, fried bacon, fried potatoes, fried slice, with the only unfried things being the grilled to-mah-to and the baked beans). Bills arrived in the post about a week later, and were astonishingly reasonable. Rather civilized, those Brits, don't you know.