From The Vault
It is a Sherman but it's been heavily modified over the years. Basically all of your preconceived ideas about tanks being heavy, slow but virtually unstoppable are born out by this baby.
Unlike other Fallout Tactics vehicles, it's got a 75mm gun called Tank Gun which can lob a shell over a reasonable distance. It was a property of Reavers, and was stationed in their main camp, Newton, until a squad of Midwestern Brotherhood of Steel, led by the Warrior, came, repaired it and took it under their control.
- The game seems to use the pilot's Big Guns skill for accuracy/damage calculations with the Tank Gun, not the gunner's.
[edit] Appearances in games
Tank appears only in Fallout Tactics.