 Complete the following phrase:  Although the Japanese were successful in pushing the Australian defenders back in the centre of their position on the track, heavy fighting on the flanks of the position blunted the Japanese attack, bringing it to a standstill. In the aftermath, the Australian commander, Brigadier Kenneth Eather, perceiving that the attack could not be held any further and that Ioribaiwa Ridge was unsuited to launching a counter-attack, withdrew his force back to Imita Ridge. The Japanese, however, had reached the limit of their supply line, and strategic factors and reverses elsewhere forced the Japanese commander, Major General Tomitaro Horii, to pursue a more defensive approach in Papua and New Guinea. As a result, in October the Japanese began to withdraw towards their beachheads at 