It is estimated that there were between 14,000 and 19,000 casualties on the initial day of the invasion of Normandy. Allied forces suffered the greatest number with approximately 10,000 casualties. The Germans suffered between 4,000 and 9,000 casualties.
The scale of the invasion of Normandy on June 6, 1944 created an impossible task for military leaders to track the exact number of casualties. A force of 150,000 troops landed on the beaches of Normandy and was tasked with navigating 200 yards of open ground under heavy German fire. The troops were assisted by strong naval and air attacks prior to the landing in an attempt to weaken German forces. Allied forces defeated German coastal defenses establishing a foothold in Western Europe.