jun 4, 1942 - The Battle of Midway. Japanese and
American carriers fought again on
the high seas. Japanese had planned
to capture the island of Midway in the
middle of the Pacific Ocean, home to
a key American military base. The
Americans had a important advantage:
they had broken the secret Japanese
code used to transmit messages. As a
result, the American knew the date and
location of the planned Japanese attack.