It sounds like a familiar story: on a bright Sunday in December, nearly 70 years ago, Japanese planes blazed out of the sky to strafe and bomb an American warship while it lay at anchor. The surprise attack caught the crew off-guard, and despite valiant action, the ship was critically damaged, had to be abandoned, and soon sank. If you said December 7th, 1941, Pearl Harbor, you’d be wrong. The date was December 12, 1937, and the place was the Yangtze River in war-torn China. The vessel? The gunboat USS Panay. It was a sudden and deliberate attack that might...