Part of the Allied plan for the invasion of mainland Europe called for the capture of port facilities, in order to ensure the timely delivery of the enormous amount of war material required to supply the invading Allied forces (it was estimated that the 37 Allied divisions to be on the continent by September 1944 would need 26,000 tons of supplies each day).
盟軍入侵歐洲大陸計劃的一部分，是攻佔沿岸港口設施，以確保及時運送大量戰爭物資供應入侵盟軍之所需（據估計，在1944年9月於大陸的37個盟軍師每天將需要26,000噸物資）。