[a] During the Battle of the Bulge in December 1944, the Germans had attacked a weakly defended section of the Allied line and surrounded American forces in the town of Bastogne.

Cobra King's commander was Lieutenant Charles Boggess, heading a crew of Hubert S. Smith (driver), Harold Hafner (co-driver), Milton Jafet (gunner), and James G. Murphy (loader).

Finally, an American soldier strode to the tank, stuck his hand out to Boggess, and said "Glad to see you".Shortly after the Battle of the Bulge Cobra King was rearmed with a 76 mm gun then fought on into Germany.

[3] Cobra King was part of Task Force Baum, Patton's controversial and failed attempt to liberate the prison camp Oflag XIII-B.

[13] In July 2009, the United States Army Center of Military History shipped Cobra King from Germany to the Patton Museum at Fort Knox for restoration.

[9] On 3 August 2017, Cobra King was installed at the new National Museum of the United States Army at Fort Belvoir, twenty miles south of Washington, D. C.[3] Charles Lemons, Curator of the Patton Museum of Cavalry and Armor when the vehicle arrived at Fort Knox, had conversations with both CPT Baum and COL James Leach (who was Company Commander of Co. B, 37th Tank Bn at the time of the Raid).