Australian Bristol Beaufighters of No. 31 Squadron, RAAF in flight.
No. 31 Squadron saw action against the Japanese in the South West Pacific theater of World War II. During the war the squadron served in long-range fighter and ground-attack missions.

No. 31 Squadron

Official caption: "Sattelberg. New Guinea. 1943-11. Matilda tanks and troops on the track to Sattelberg." 
This is actually a Matilda CS (Close Support) Tank with a 3" (76.2mm) howitzer.  

Matilda tanks on the track to Sattelberg

 New Guinea, Gorari. - Most of the hand to hand fighting took place in the Gorari region, where one Australian unit killed and buried over 500 Japanese soldiers. The Japanese dead were buried in common graves, 5, 6, and up to 10 in one grave. Their steel helmets were placed on the top of the graves. In this photo is an Australian burying party. November 23, 1942.