The Bombing of Normandy during the Normandy invasion was meant to destroy the German communication lines in the Norman cities and towns. However, very few Germans occupied these municipalities. German troops were mostly located outside these areas. On 9 July 1944, Field Marshal Bernard Montgomery demanded a massive air assault against Caen in hopes of clearing the way for an attack the following morning. Four hundred and fifty heavy aircraft participated, dropping 2,500 tons of bombs. The pilots however negated most of the effect by releasing their loads well back from the forward line to avoid hitting their own troops. As a result, the city incurred heavy damage but German defenses went largely unscathed.