Another Israeli invasion in 1982 forced the PLO out of southern Lebanon and occupied the area. The following eighteen years until 2000 saw prolonged guerrilla warfare between Israeli forces, their allies in the South Lebanon Army and Hezbollah. UNIFIL was caught in the middle of this conflict. The Irish battalion's role consisted of manning checkpoints and observations posts and mounting patrols. A total of 47 soldiers were killed. In addition to peacekeeping, the Irish provided humanitarian aid to the local population - for example, aiding the orphanage at Tibnin. From 25 April 1995 to 9 May 1996, Brigadier General P. Redmond served as Deputy Force Commander of UNIFIL during a period that coincided with the Israeli Operation Grapes of Wrath offensive in 1996.