Morobe province was a key campaign site during World War II. The Japanese had established strong supply bases in the towns of Lae and Salamaua in 1942. The Salamaua-Lae campaign of the following year was a series of actions in which the Australian and United States forces sought to capture the two Japanese bases. The campaign to take the area began with the Australian attack on Japanese positions near Mubo, on 22 April 1943 and ended with the fall of Lae on September 16, 1943, in Operation Postern. The campaign was notable not only for its classic defense maneuvers at the Landing at Nadzab and the brutal hand-to-hand combat at Salamaua; Lyndon B. Johnson, the 36th President of the United States, saw his sole 13 minutes of combat on a bombing mission over Lae. Although the plane he was supposed to fly was shot down, with no survivors, his flight in B-26 Marauder had repercussions throughout the Pacific theater. Sent as an observer, with instructions to report up the line to Roosevelt, to Congress, and to the Navy brass that the conditions in the Pacific were deplorable, the men had third–rate equipment to fight Japan's first class planes. The effort needed another 6,800 trained and experienced men, plus better supplies, provisions, and generally a higher priority in the war effort.