page_title: Tank destroyer battalion (United States)
section_title: Northwest Europe
hierarchical_section_title: Tank destroyer battalion (United States) / Combat experience / Northwest Europe
caption_attribution_description: American tank destroyer firing near Saint Lo, June 1944. Français&#160;: Un chasseur de char américain est en train de tirer un obus. Deutsch: Ein amerikanischer Jagdpanzer beim Schießen in der Nähe von Saint Lo.
context_page_description: The tank destroyer battalion was a type of military unit used by the United States Army during World War II. The unit was organized in one of two different forms—a towed battalion equipped with anti-tank guns, or a mechanized battalion equipped with armored self-propelled guns. The tank destroyer units were formed in response to the German use of massed formations of armored vehicles units early in WWII. The tank destroyer concept envisioned the battalions acting as independent units that would respond at high speed to large enemy tank attacks. In this role, they would be attached in groups or brigades to corps or armies. In practice, they were usually individually attached to infantry divisions. Over one hundred battalions were formed, of which more than half saw combat service. The force was disbanded shortly after the end of the war when the concept had been shown to be militarily unsound.
context_section_description: By far the largest employment of tank destroyer units was in the north-western Europe campaign through France, the Low Countries and Germany. They were employed from the very beginning of the campaign, with one battalion being landed on Utah Beach in a follow-up wave on D-Day.
  A revised version of Field Manual 18–5, introduced in June 1944, broadened the doctrine of tank destroyer operations. It allowed for a more dispersed deployment of the battalions throughout a force, and recommended that when enemy armor was only expected to be deployed in small groups, tank destroyers were to be distributed among forward units. It became general practice to attach a tank destroyer battalion semi-permanently to a division; this meant that it was locally available for emergencies, and that it would be able to train alongside "its" division when out of the line.
  The most significant employment of tank destroyers in Normandy was in early August, at the Battle of Mortain, where the 823rd Tank Destroyer Battalion (towed 3-inch guns) was on the defensive alongside the 30th Infantry Division. The division, which was in temporary positions and not prepared for a defensive engagement, was attacked by elements of four panzer divisions on 6 August, under heavy fog. The 823rd put up a strong defense—knocking out fourteen tanks—but took heavy losses, being mostly overrun and losing eleven guns. This served to reinforce misgivings about the effectiveness of the towed units, and a report delivered to the Pentagon in December recommended they be phased out in favor of self-propelled units.
  It was in France that the allies first began to face the German Panther tank.  The superior frontal armor of this tank, along with the Tiger I, Tiger II, and newer Panzerjägers, made the 75mm armed US tanks and tank destroyers less effective. The presence of these German tanks expedited the development and production of US armored vehicles armed with 90mm guns - the first to be introduced being the M36 tank destroyer.
caption: M10 tank destroyer in action near Saint-Lô, June 1944.
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