"The M1-20-7, one of the earliest M1s variants, if not the earliest to hit the battlefield. Although the M1 transmission and tracks encountered a number of problems, the M1 was pursued for an extended period of time as a result of the Blossom Empire finding it not only effective for propaganda, but also finding some use in much flatter terrain. Of course, having 10mm of penetration spurred the development of the other M1s that exist today."