Jon Diamond MD is a kidney specialist in the USA with a deep interest in the Second World War. He is a keen collector of photographs. His Stilwell and the Chindits, War in the South Pacific, Invasion of Sicily, Invasion of the Italian Mainland: Salerno to Gustav Line, 1943-1944, Onto Rome 1944; Anzio and Victory at Cassino and Beyond Rome to the Alps; Across the Arno and Gothic Line, 1944-1945 and Op Plunder The Rhine River Crossing are all published by Pen and Sword in the Images of War series.

The Japanese seizure of Rabaul on New Britain in January 1942 directly threatened Northern Australia and, as a result, General Douglas MacArthur took command of the Southwest Pacific Area. In July 1942, the Japanese attacked south across the Owen Stanley mountain range.