The Normandy landing campaign was the largest amphibious landing campaign in the history of the world. The victory of the Normandy landing announced the opening of the second battlefield of the Allied Forces in the European continent, which meant that Nazi Germany was caught in a double battle, relieved the pressure of the Soviet army, effectively cooperated with the Soviet army to conquer Berlin, and forced fascist Germany to surrender unconditionally in advance.

As a result, the US military put its main force into the Pacific Ocean to fight against Japan, which accelerated the end of the Second World War. The victory of the Normandy landing announced the opening of the second battlefield of the Allied Forces in the European continent, which meant that Nazi Germany was caught in a dilemma of fighting on both sides and being attacked between Scylla and Charybdis, and completely shattered the wishful thinking of the German army trying to defeat the landing of the United States and Britain on the western front with troops, and then deploying 50 divisions for the Soviet battlefield.

Reasons for the success of Normandy landing:

First, the successful organization of strategic deception made the German high command misjudge, which not only ensured the suddenness of the landing operation, but also ensured the smooth progress of the campaign, which had a great impact on the whole campaign.

Second, master the absolute air and sea power: this is an important reason for the success of landing. The allied forces put into battle13,700 aircraft and 9,000 warships, which were dozens of times that of German aircraft and warships. Before landing, the air force bombed the German air base, aviation industry and new weapon development base on a large scale, which seriously weakened Germany's war potential.

3. Sufficient material preparation and careful reconnaissance support: The Allies have made preparations for nearly a year to ensure the successful landing, with a large number of troops and complete equipment. Before landing, the allied war materials and equipment were fully prepared.

4. Realistic pre-war training: Because the landing operation is an extremely complicated combat style, the Allied forces conducted repeated simulation drills on the organization and actions of participating troops before landing, so as to enable the troops to master relevant combat skills as soon as possible and improve their combat effectiveness. After the war, combatants spoke highly of pre-war training, especially Thompson's training base.