Part 7. The Sicily invasion. Montgomery, Patton and the disagreements about the invasion plan. by The Irish Brigade in the Second World War published on 2019-01-21T15:28:24Z The podcast sets the scene for the invasion of Sicily in July 1943. There were disagreements at the planning stage and tensions between 8th Army Commander General Bernard Montgomery and US 7th Army Commander General George Patton. Italy, traumatised by losses in North Africa, the Balkans and the Eastern Front, was teetering on the brink of collapse.