"Pandora's Legions" by Christopher Anvil is one of the books at the Baen Free Library. I was expecting it to be a bit jingoistic, as it was one of these "humans are superior" novels, but instead it was amusing, in a comedy-of-errors sort of way. The "Hunter" sections of it (which I liked best) reminded me of "The Unorthodox Engineers" (I think by Colin Kapp -- I borrowed it from the library as a teen and have never seen it since and miss it greatly). These guys, rather than being unorthodox engineers faced with impossible engineering problems, are unorthodox military faced with impossible military problems. But I think there were like only three incidents there; the rest was following another character with big-picture problems.
(originally on my livejournal)