Board Thread:Timeline Discussions/@comment-7559950-20130911012534/@comment-3398633-20130921144748

Here's the most plausible solution (and I've studied the Germans for quite a while to be confident in my explaination).

The Germans made their first major mistake by invading the USSR. Stalin didn't want a war with Hitler, and the pact ensured that. Hitler was winning against Stalin, but Hitler didn't listen to his generals who knew who to beat the Russians. Remember, the Germans surrounded Leningrad, and were 20 miles away from Moscow, so defeating the Soviet Union was possible. Hitler simply refused to listen to his military staff, and thus feel into easily avoidable traps such as Stalingrad. Once the Allies are dealt with, the USSR isn't an issue. Sidenote, Stalin killed off most of his generals, and replaced them with fools. Only when he was losing did he get better generals. No major enemies, and Stalin would have kept the likes of Zhukov away from the leadership out of fear of rivalry (he did have him discharged when Zhukov became too popular). By keeping Hitler out of a war with Stalin, Hitler can focus on Britain.

Britain got most of its supplies from its empire. India was instrumental in providing all of the goods Britain needed to build its air force and keep the Germans at bay. There hundreds of thousands of Germans waiting to invade the island, and the British Navy was all be destroyed, so getting their by sea wouldn't have been an issue. It was the RAF that was keeping the Germans at bay. At the time, the Germans were not focusing their efforts entirely on Britain. They were fighting in the Balkans at the same time, and easily feel for British tricks, such as moving the lights to another part of a city to avoid direct bombings. By allowing the Germans to discover that the British had radar sooner, and by making the Americans decide they do not want to get involved (the Lend-Lease Program helped Britain by having the US give 50 destroyers to them). Ramp up American isolationism, and step up the Americans desire to remain totally neutral, and you weaken Britain.

This has the effect of isolating Britain from its nearly ally, and forcing them to rely on their bombed out industrial base. Give the Germans more U-boats to focus on the convoys (which mostly came from America), and the Britain with collapse in no time. Finally, DO NOT allow Germany to declare war on America. Remember, Hitler declared war on Roosevelt, not the other way around. America needed a reason to fight Germany, and didn't have on at the time thanks to the isolationists' efforts. However, Germany willingly declared war on the United States, which in turn spelt the doom of Germany. Once Britain is out of the way, you can move on to Russia, where the full might of German power can be consentrated, and if you have Japan in on this, have them use their military power against India, which they had already invaded by the end of the conflict. They were allied to one of the most prominent Indian independence groups in the region, so they could help. Or, you could have them focus on China, and use that air power wasted against the US in fighting the Kaomintang and the Communists.

With that, you should win the war. Many easily avoidable mistakes turned into profit. I hope that helps.