World War 2

Yesterday, I didn't post anything right,this was because I was watched The Longest Day, a World War 2 epic movie..This movie was quite interesting, although it was black-white movie,but the storyline,sound was awesome..For history fact of the day,I would like to tell my opinion about the factor that affect and brought German to a disastrous result in WW2.
1.Hitler made and had decided a various of fatal order in WW2.
a)On May 24th 1940,he ordered Guderian to stopped,thus,the evacuation of the remained allied troops which are the French,British,Polish at Dunkirk successfully completed by the allies high command, the same evacuated troops fought the German when the Normandy invasion on 6th June 1944.
b)During Operation Barbarossa on 1941,the situation of German troops was very critical,but Hitler declared war against United States although they were not in war situation.
c)Hitler ordered Gen.Friedrich Paulus to stand and fight during the Battle of Stalingrad.Actually, Paulus can fight with his way by moving eastward and combined with the special forces led by Field Marshal Erich Von Manstein and make a counterattack against Zhukov at Stalingrad.
d)During the Normandy invasion,Hitler ordered the entire of Germans troops to hold their position and there should not be any withdrawal.The result was disastrous,they are being surrounded by a large pocket made by the allied troops.The desperated German troops disobey the order and tried to breach the pocket, as the result,many of them was slaughtered or became the prisoners of war.If they make a major withdrawal,the German forces will form a strong defensive barrier line along the Seine River and they might be repel the invasion.
e)Hitler refused to transferred his remaining troops to the Eastern Front which are threated by a large number of infantry and armour division.But,he concentrated his forces to western front and willing to stop the allied advance at Ardeness.
f)The last factor was,after Battle of Britain and Operation Barbarossa,the Germans was totally lack of armour vehicles,warplanes and of course,the troops.During the Battle Of Britain,Luftwafte lost 1900 warplanes and they lost their air superiority during the last phase of war,which are mean during the Normandy invasion and the Vistula-Oder Offensive.While in Normandy invasion,the allies gain a superiority of 20:1 in number of armour vehicles and 25:1 in the number of warplanes,while the Eastern Front which is nominally Soviet had more 225 infantry division and 22 armour group.For the Germans,they just have 59 division and 10 armour division to faces the Western allied and had only 50 infantry division and 12 armour division to make a last stand at Eastern Europe against the superior Red Army.