Finished it two nights ago - But had first read it back in the late 60’s/early 70’s - probably as an Analog issue. Had to locate a copy at a used book store down in FL while working for a couple of days.
That bookstore also had (past tense!) because I bought them:
The Stainless Steel Rat Gets Drafted
The Stainless Steel Rat’s Revenge
The Stainless Steel Rat Saves the World
The Stainless Steel Rat Wants You!
Oh, yeah! I’ve got a few of those sitting right here next to me. I haven’t read them for ages, though. “The Stainless Steel Rat Gets Drafted” was always my favorite. Made me laugh out loud. :-)