Combat Pacific For six months following the Pearl Harbor disaster, the outnumbered and ill-supplied Allied forces in the Pacific could do little more than attempt to delay the Japanese advance. Australia was a key stronghold for the buildup of Allied forces, but in early 1942 the last Allied outpost north of Australia was Port Moresby on the southern coast of New Guinea. Only 200 air miles from Port Moresby across the rugged Owen Stanley Mountains, the enemy had occupied Lae and Salamaua on the Huon Gulf. However, in May 1942, a Japanese fleet bound for Port Moresby was intercepted by a U.S. naval force and after an aerial engagement -- the Battle of the Coral Sea -- the enemy fleet withdrew. A month later in the central Pacific, a Japanese invasion fleet steaming toward Midway Island was defeated by U.S. naval airpower supplemented by a small force of AAF B-17s and B-26s in the Battle of Midway. These victories stabilized the outer perimeter of enemy expansion in the Pacific although the threat to Australia remained. Click on the following links to learn more about combat in the Pacific Theater of Operations. Papua Solomon Islands New Guinea Blockade Aleutian Campaign Island Hopping Gilbert and Marshall Islands Victory in New Guinea Johnny Got a Zero America's Top Two Aces Return to the Philippines Corregidor Recaptured Click here to return to the World War II Gallery. Find Out More Related Fact Sheets Day of Infamy: The Pearl Harbor Attack Boeing B-17G Flying Fortress Martin B-26G Marauder Other Resources USAF Historical Study No. 34: AAF in the War Against Japan (Provided by AFHRA) Note: The appearance of hyperlinks does not constitute endorsement by the National Museum of the USAF, the U.S. Air Force, or the Department of Defense, of the external website, or the information, products or services contained therein.