The United States protested Japanese aggression by cutting off trade with Japan. Japanese military leaders warned the without oil, Japan could be defeated without its enemies ever striking a blow. The leaders declared that Japan must either persuade the US to end its oil embargo or seize the oil. On November 5, 1941, Japan ordered its navy to prepare for an attack on the U.S. The U.S. military had broken Japan’s secret communication codes and learned that Japan was preparing for a strike. What is didn’t know was where the attack would come. Late in November, Roosevelt sent out a “war warning” to military commanders in Hawaii, Guam, and the Philippines.

Pearl Harbor - December 7, 1941 update timeline As you watch the picture slide show you will need to use the letters in the words P E arly morning attack A R L H USS A rizona B O and create words off of those letters that give meaning to the event. Words can either start, end, or be part of the word

Battleships Burning at Pearl Harbor: December 7, 1941 the Japanese military launched a surprise attack on the US Naval base at Pearl Harbor. The attack sank or damaged over 14 naval vessels and killed over 2,300 U.S. Military personel. (Photo Credit: Corbis )

  USS Arizona Burning at Pearl Harbor: The USS Arizona burns after being hit by a Japanese bomb in Pearl Harbor, December 7, 1941. (Photo Credit: Corbis )

USS Arizona During Pearl Harbor Attack: The battleship USS Arizona engulfed in smoke after being hit during the attack on Pearl Harbor. (Photo Credit: Time & Life Pictures/Getty Images )

Pearl Harbor Bombing: Black smoke pouring from USS California on fire in Pearl Harbor after the surprise attack by the Japanese. (Photo Credit: Getty Images )

USS Arizona Burning and Sinking: The Arizona was the US battleship that sustained the most damage and had the most casualties during the attack on Pearl Harbor. (Photo Credit: Corbis )

Bombing of Wheeler Field: Japanese planes boming the US Naval Air Station at Wheeler Field as part of the Pearl Harbor attack. (Photo Credit: Getty Images )

Hawaiian Airfield Attack: Black clouds of smoke pour from burning aircraft on a military airfield near Pearl Harbor. December 7, 1941. (Photo Credit: Getty Images )

Aerial View of USS Arizona Memorial: The USS Arizona Memorial seen from above. The memorial was built on top of the sunken remains of the Arizona. Much of the hull remains and oil continues to slowly leak into the water. (Photo Credit: Corbis )

USS Arizona Memorial: The front of the USS Arizona Memorial seen from the harbor. The Arizona is not just a memorial, it is also a tomb. The bodies of over 900 sailors and marines killed during the attack remain aboard the sunken ship. (Photo Credit: Corbis )

Remains of USS Arizona: The top of the sunken USS Arizona sticks out of the water. (Photo Credit: Corbis )

USS Arizona Memorial Wall: The names of the sailors who died aboard the Arizona are inscribed on the wall inside the USS Arizona Memorial. (Photo Credit: Corbis )

Remembering Pearl Harbor Dead: May 27, 1942 Remembering Pearl Harbor Dead: May 27, 1942. Enlisted men of the Naval Air Station at Kaneohe, Hawaii, place leis on the graves of their comrades killed in the Japanese attack on Pearl Harbor on December 7, 1941. Graves were dug along the shore of the Pacific Ocean. (Photo Credit: Corbis )

Newspaper Headline After Pearl Harbor Attacks: The headlines of the New York World-Telegram on Monday December 8, 1941 announce the attacks on Pearl Harbor. (Photo Credit: Corbis )

“A day that will live in infamy…….” President Roosevelt’s Speech http://www.history.com/shows/wwii-in-hd/videos/attack-pearl-harbor#attack-pearl-harbor http://www.history.com/topics/world-war-ii/pearl-harbor/videos/fdrs-pearl-harbor-address