Always remember Pearl Harbor
The surprise attack had been conceived by Admiral Isoroku Yamamoto. The strike force of 353 Japanese aircraft was led by Commander Mitsuo Fuchida. There had been no formal declaration of war.
The following day President Franklin Delano Roosevelt said, “Yesterday, December 7, 1941 — a date which will live in infamy — the United States of America was suddenly and deliberately attacked by naval and air forces of the Empire of Japan ...”
Those words prompted Congress to declare war and signaled America’s entry into World War II.