In order to achieve this, the Allies needed access to a number of airbases in the region. Allied high commanders, including General Douglas MacArthur, directed that two airbases be secured: one at Lae and another at Finschhafen. The capture of Lae would provide the Allies with a port to supply Nadzab and would facilitate operations in the Markham Valley. Gaining control of Finschhafen, and the wider Huon Peninsula, was an important precursor to conducting operations in New Britain by providing a natural harbour, and enabling control of the strategically important Vitiaz and Dampier Straits.