4. Not Enough American SubmarinesÂ

The Submarine Service of the United States represented only 1.6% of all Navy personnel during the war. However, they were also responsible for over 55% of all Japanese ships sunk. Although this is quite impressive it also presents us with a huge blindspot that the American Navy had. The Germans had been using U-Boats since World War I and there was no reason why the US couldn’t have adopted a strategy to attack the German U-Boats in the same fashion. This could have helped end the war much sooner.