Wartime Production

American Production           German Production       Japanese Production      
Merchant Ships - 5,777         
Naval Vessels - 1,556                               
Aircraft - 299,293                    Aircraft - 111,767            Aircraft - 69,910           
Jeeps - 634,569
Tanks - 88,410                         Tanks - 44,857                  Tanks - Very Few
Chain saws - 11,000
Trucks - 2,383,311
Rifles - 6,500,000
Bullets - 40,000,000,000
Atomic Bombs - 2


Clearly, chain saws are the most important.
"I believe that all of these chain saws are going to tip the balance against the Axis powers."  FDR, August 1945  (fictional account)