U.S. submarines accounted for 56% of the Japanese merchantmen sunk; mines or aircraft destroyed most of the rest. US submariners also claimed 28% of Japanese warships destroyed. Furthermore, they played important reconnaissance roles, as at the battles of the Philippine Sea (June 1944) and Leyte Gulf (October 1944) (and, coincidentally,[clarification needed] at Midway in June 1942), when they gave accurate and timely warning of the approach of the Japanese fleet. Submarines also rescued hundreds of downed fliers, including future U.S. president George H.W. Bush. COUNT 4
QSN1 What percentage of Japanese merchantmen were sunk by U.S. submarines? ANS1 56% QSN2 What percentage of Japanese warships were sunk by U.S. submarines? ANS2 28% QSN3 What future U.S. president was rescued by a submarine? ANS3 George H.W. Bush QSN4 What was one of the important roles submarine played in the war? ANS4 reconnaissance roles