It may not sound like a killer, but the main weapon the Germans employed was fear, fear of their military might at the start of their French campaign, scarring Winston Churchill with their use of unrestricted submarine warfare, and using Propaganda in conquered territory's to scare people with altered views of the allies, minority groups and the German war machine.
U-boats.
The U-boat submarine
Probably the Fokker series.
The German Air Force was (and still is) called the Luftwaffe
A survey taken among soldiers and their commanding officers after World War I voted the machine gun the most effective/devastating weapon of that war. A similar study done after WW II named field artillery to this dubious honor.
U-boats.
The machine gun
The best weapon was the German mg42. It was so good that it is still in service in parts of the world today. It has an immense rate of fire.
The U-boat submarine
Their main tactic was Blitzkreig.
Yes
German, Japan, Italy.
Probably the Fokker series.
The one, main weapon was man. All of them could pull the trigger or push the button. After man was the rifle. Everyone had one and individually these were the most deadly weapon overall.
Mauser
main German fighters were the volkwolf 190 amd messerschmidt 109..............
The German Air Force was (and still is) called the Luftwaffe