Two groups of engineers attacked the Australian company around Pirivi from east and west along the Kokoda -- Oivi road .
Tsukamoto detached a company of infantry from the main body of the 1st Battalion .
Two groups of engineers attacked the Australian company around Pirivi from east and west along the Kokoda -- Oivi road , while Tsukamoto detached a company of infantry from the main body of the 1st Battalion .