What were some decisions Hitler made that were particularly disastrous for Germany and what were their significances?

Four come to mind but there are many more that could be mentioned.

1. 1: He broke the non-aggression pack with the Soviet Union in 1940 by invading to the East and thus creating a war in Europe on two fronts. He could not maintain his advance into Russia and German armies were left to suffer through terrible Russian winters. Ultimately the Soviet army would distroy most of the German military.

1. 2: He became increasingly paranoid and thus would not allow key decision making at the field level. The best example of this and the one that proved most disasterous for Germany was when much needed German reinforcements, artillery and tanks were needed to strengthen the German defenses during the allied invasion of Normandy. No significant troop or equipment movements were allowed without Hitler's approval. German military command lost significant precious time reacting to the invasion because of Hitler's over-controling authority.

1. 3: The German airforce (Luftwaffe) favored fighter planes over long range bombers. Germany's relative lack of long range bombing capabilities compared to that of the allies proved to be a significant military advantage for the allies.

1. 4: Hitler's all-consuming hatred for Jews and other 'undesirables' caused irrational decision making. He diverted much needed military personnel and resources away from the fight against the Russians on the East and the Americans & British on the West, in order to carry out the "final solution to the Jewish question." Significant amounts of military personnel were used to carry out the holocaust instead of fight the war against the allies.

Dear Jennifer,

We might as well ask "What were the disastrous decisions made by U.S. president FDR, since there were many, such as goading Japan into war in the first place and allowing the Pearl Harbor disaster to happen! FDR made a disastrous decision to violate American neutrality, without approval from either Congress or the average American citizen/voter.

Rather than take the earlier poster's positions, above, at face value, I would encourage you to investigate the truth yourself:

1. It was Stalin and the Soviet Union who had already made substantial plans and preparations for attacking Germany and Western Europe. Chancellor Hitler KNEW this, and pre-empted it with a "pre-emptive strike" as the George Bush administration now calls it, for example. For evidence, you can get the book __I Flew For the Fuhrer__ in which Hans Knocke documents the Soviet war preparation that he saw, in person, once the German assault began. (Knocke reveals something like, "We attacked just in time...")

2. There is absolutely no evidence whatsoever that Chancellor Hitler "became increasingly paranoid." That is utter nonsense. Furthermore, Chancellor Hitler consistently made some of the most brilliant military decisions of the war, as documented in such books as David Irving's __Hitler's War__.

3. Chancellor Hitler himself had issued orders for, and demanded development of, bombers rather than fighters for the new jet development program! This is, again, documented in the Irving book mentioned in #2 above. Subordinates failed, not Chancellor Hitler!

4. Hardly nothing was "diverted" away from the Russians! Quite the contrary, important armor formations were moved from the West to the East, along with any number of other major assets. One need only look at the battle for Berlin, and on which front the fiercest stand (with remaining assets) was made. Chancellor Hitler was not born with any "hatred" of Jews. Instead, one need look at what actions Jews themselves carried out, as delineated in the film "The Eternal Jew," which inflamed German nationalists against them. After all, Germany was certainly not the only country in Europe to kick out Jews for what they did in society. Spain, Britain, France, ... nearly every country of Europe had run the Jews out over the past 1,000 years before the Third Reich! There was nothing "irrational" about any of this. Look for cause and effect in your studies.