The 1975 film "the Great Sovereign" is precisely about the landing of the largest Allied "Great Sovereign" in Normandy in World War II, which was directed by Stewart Cooper and won the Golden Bear at the Berlin Film Festival. This film is the reference of many films after the second World War. Background: in the early morning of June 6, 1944, allied troops dominated by the United States and Britain landed on Normandy Beach in southern France. The so-called second battlefield was opened, with plans to be known as the "Battle of the Great Sovereign" (OPERATION OVERLORD), or overlord or overlord (Chinese mainland reversal). Actually, OVERLORD refers to a British monarch. Due to the secrecy measures of the Normandy landings, many people do not know when the real attack was launched, and the supreme authorities are all known by the code name. Dday represents the date of attack, and H represents the time of attack. All subsequent attacks by the allies have been carried out in this mode. The allies also took large-scale measures to deceive the enemy, a codenamed "stoic" to deceive the Germans into thinking that the allies would land at Calais, the narrowest part of the Strait. At the same time, large-scale air strikes were carried out to weaken near Normandy.