About This File
CFS API Macro--Allis-Chalmers M4 High-Speed Tractor, CFS version of a WWII ground vehicle. The M4 High-Speed Tractor was an artillery tractor used by the US Army from 1943. The M4 was based on the chassis and drive train of the obsolescent M2 Light Tank. This common practice of re-using old vehicles simplified design, allowed for easy production, and made maintenance in the field easier. By Edmundo Abad.