I've made some pretty substantial changes to the alpha sheets behind the scenes, and to the Pathfinder [Legacy] sheet in particular. Please try clearing your browser cache, or post in the Experimental Features forum if there are any issues!
At this point, we highly recommend that all new Pathfinder sheets be created in the alpha and that existing Pathfinder sheets be copied into it via the 'Copy to Sheets Alpha' link in your regular sheet list
The XM803 was a joint US-West German project to replace the M60. Unfortunately, cost overruns and disagreements (The US wanted the Shilelleigh 152mm gun/launcher, the Germans wanted a 120mm smoothbore gun) led to its cancellation. The US came up with the Abrams, and the Germans the Leopard II.
The Soviet T-35 was perhaps the ultimate in "Land Dreadnaughts" with four turrets, one with a 76.2mm gun, two with 45mm guns (one fires rear), and one with a machine gun. 60 were built.
Being humongous targets with surprisingly thin armor, they were utterly uninspiring in service. Most ended up as photo-ops for Whermacht soldiers.