Steel Armor: Blaze of War is realistic tank simulator with tactical elements. The game models Soviet T-62 tank and US M60A1 tank in detail. Each tank has interactive cockpit with crew. Player controls a tank, and commands a tank platoon and attached forces in 4 large scale dynamic campaigns.
Steel Armor was the closest I could find. There was some Russian game in alpha testing that looked big on realism but the graphics were a tad sad still.