Following the capture of northern Papua, New Guinea Force was reorganised, and new formations began arriving. Meanwhile, throughout the first half of 1943, Australian operations focused upon the capture of Salamaua, which saw a series of battles aimed at securing Salamaua prior to the drive on Lae. In August 1943, a new I Corps headquarters was raised from the New Guinea Force headquarters staff, and the corps headquarters established itself at Dobdura, where it was assigned to New Guinea Force as an army-level headquarters. Assigned the role of capturing Lae, I Corps was provided with the 7th Infantry Division, which in early September 1943 was flown in to Nadzab and attacked overland from there and the 9th Infantry Division, which carried out and amphibious landing to the east of Lae, before assaulting along the coast. Lae was captured more quickly than had been expected, and later in the month, this was followed up by elements of the 9th Division which carried out a landing at Scarlet Beach, as part of operations to secure the Huon Peninsula, while the 7th Division began operations to secure the Markham and Ramu Valleys. The following month, however, I Corps headquarters was relieved by II Corps, as its personnel were in need of rest, and they subsequently returned to Australia. II Corps and New Guinea Force would subsequently command the conclusion of the operations commenced by I Corps, culminating in the capture of Madang in April 1944.