Operation Backstop was a United Nations Protection Force (UNPROFOR) military plan designed to guard a portion of the United Nations Protected Areas (UNPAs) against attack by the Croatian Army during the Croatian War of Independence. The operation, developed by the UNPROFOR staff in charge of the UNPA Western Slavonia in 1992, was scheduled to be implemented by two mechanised companies of the Princess Patricia's Canadian Light Infantry (PPCLI) battalion deployed in the area.