M75A4 Sentinel Main Battle Tank

While I try to uncrappify my creative life, which is currently devoted almost entirely to earning a living, I've put together a little extra stuff for the 6-Commando Tactical Handbook.  Here is the main battle tank of the United Nations Alliance, the M75A4 "Sentinel," a joint venture of the United States and Great Britain, and found on every front and nearly every deployment of United Nations troops.  Massing at 72 tons and with heavy armor, it's a genuine battlefield strongpoint, and a very hard target, even for the gauss rifles of the FSR's T90PG tanks.