Which U.S. submarine fired the first American shots of World War II at Pearl Harbor?

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USS Ward fired the first American shots of World War II at Pearl Harbor.

Ward was a Wickes-class destroyer conducting a patrol entrance outside Pearl Harbor on the morning of December 7, 1941. Its crew reported a small submarine near the harbor entrance and attacked it with gunfire and depth charges.

The vessel was a Japanese midget submarine attempting to enter the harbor. Ward’s action occurred before the large air attack began, although the report did not immediately produce a full-scale American response.

Ward’s crew later received recognition for the engagement. The ship itself was eventually converted into a high-speed transport and was sunk by a kamikaze aircraft in the Philippines in December 1944.

Source: Wikipedia · fact-checked Sept. 2026

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