As with other German heavy tank battalions, it was normally not assigned to a single corps, but shuffled around according to war circumstances.

In the aftermath of the Battle of Stalingrad, the battalion was deployed to Army Group Don and arrived at the front on January 1, 1943.

In Operation Overlord, the invasion of Normandy on June 6, 1944, the unit was transferred to the command of 5th Panzer Army.

On the launch of Operation Goodwood, the 3rd company, which was based in Cagny, Calvados, was destroyed in the preliminary Allied bombing, with impacts powerful enough to turn a 56-ton Tiger upside down.

At the end of July, the 3rd company received new Tiger II tanks, which were subsequently destroyed in the Allied aerial attacks, with only two brought back to Germany.

In January 1945, the unit took part in several failed attempts to relieve Budapest, code-named Operation Konrad.

During the battle, Diers was ordered to take up a position by the Reichstag to help the SS garrison defend it from advancing Soviet troops.

[1] Following Hitler's suicide, Diers repaired his Tiger II to operating condition and joined a German breakout attempt with other armored vehicles.