Nazi+Weaponry+2

The weapon that might have been able to give the Nazi's the biggest chance of winning must have been the Type 21 submarine. This would help the Nazi's the most for many reasons. The first one is that unlike most submarines, the type 21 could stay under water for long periods of time and could easily go undetected by Allied ships. This would greatly help them in sea battles because the enemies couldn't find it, while the Type 21 used its SONAR capabilities to find Allied ships and attack them. Or if there was an enemy plane above the water, the SONAR would catch it and the sub could move away from the plane to avoid being killed. It would have success in battle because its speed underwater made it impossible for it to be found or destroyed, and since it stayed silent during attacks the Allied ships couldn't track it down. What helped out the most through, was its electric motor. This helped them the most because they could load torpedoes faster and the motor wouldn't make any sound underwater, so they could attack and leave and they would never be seen. By having this advanced sub, the Germans were now able to dominate on sea, air, and land, and the Type 21 submarine (which was decades ahead of its time), was able to allow Germany to extend campaigns to the sea. "German Secret Weapons."