The Japanese were strongly dug in to defend the track to Salamaua. On July 7 and 9 they stopped attacks by the 58th/59th Battalion.

The Pimple
Ridge battle between Japanese and Australian forces on the path to Salamaua. On the 12 May the Pimple was occupied by Australian forces advancing from Wau.

American Missions Against Mubo
September 3, 1942 - July 17, 1943