Wikipedia: The M113 has never received an official name, but has received a variety of nicknames over the years. The NLF called it the "Green Dragon"; the Swiss referred to it as the "Elefantenrollschuh" or elephants' roller-skate; the Germans called it the "Schweinewürfel" or pig cube.[7][8] U.S. troops tended to refer to the M113 simply as a "track". Some sources have referred to the M113 as the "Gavin" in an allusion to Gen. Gavin, but U.S. forces have never used the name.[7] The Israeli official name for the M113 is "Bardelas" (Cheetah) but the troops call it "Zelda" (another nickname is "Zippo" after the brand of lighters, as the M113 tends to combust when hit by anti-tank weapons). The Australian Army refers to its M113A1s as "Buckets", and the modified M113A1 fitted with 76mm turrets as "Beasts".