We all know Japan attacked Pearl Harbor on December 7, 1941. But what about March 4, 1942, the second time Pearl Harbor came under Japanese attack?

It’s true. Less than 90 days after the “date which will live in infamy,” Japanese bombs again fell on Oahu. Though far less lethal than the first round, the second strike was considered too hot for the American public to know about at the time. It stayed secret for decades.