Green’s Dictionary of Slang

to injure or damage.

1932		W.R. Burnett Giant Swing 222: ‘I was in the hospital about a year ago; got banged up, so they give me this job’.
1942		C.R. Bond 28 Feb. in A Flying Tiger’s Diary (1984) 120: He got one propeller tip and banged up one wheel.
1967		F. Harvey Air War – Vietnam 14: I’d hang two extra radios round my neck just in case I banged one up in my landing.
1981		M. Baker Nam (1982) 124: The crash had generally banged me up. I was spitting blood for a month at least.
2001		J. Stahl Plainclothes Naked (2002) 272: Give us something on [...] that holy man you guys banged up, huh?