The Panzer-Lehr-Division was an elite German armoured division during World War II. It was formed in 1943 onwards from training and demonstration troops stationed in Germany, to provide additional armored strength for the anticipated Allied invasion of western Europe. On 4 April 1944, the division was officially designated as the 130th Panzer Division; however, it is usually referred to as the Lehr Division. It was the only Wehrmacht Panzer division to be fully equipped with tanks and with halftracks to transport its mechanized infantry. On several occasions it fought almost to destruction, in particular during Operation Cobra, and by the end of the war in Europe bore little resemblance to the unit that had originally been activated.

Operation Cobra was an offensive launched by the First United States Army under Lieutenant General Omar Bradley seven weeks after the D-Day landings, during the Normandy campaign of World War II. The intention was to take advantage of the distraction of the Germans by the British and Canadian attacks around Caen in Operation Goodwood, and thereby break through the German defenses that were penning in their forces, while the Germans were unbalanced. Once a corridor had been created, the First Army would then be able to advance into Brittany, rolling up the German flanks once free of the constraints of the bocage country. After a slow start, the offensive gathered momentum and German resistance collapsed as scattered remnants of broken units fought to escape to the Seine. Lacking the resources to cope with the situation, the German response was ineffectual and the entire Normandy front soon collapsed. Operation Cobra, together with concurrent offensives by the British Second Army and the Canadian First Army, was decisive in securing an Allied victory in the Normandy campaign.