Amal fought a long campaign against Palestinian refugees during the Lebanese Civil War (called the War of the Camps). After the War of the Camps, Amal fought a bloody battle against rival Shi'a group Hezbollah for control of Beirut, which provoked Syrian military intervention. Hezbollah itself was formed by religious members of Amal who had left after Nabih Berri's assumption of full control and the subsequent resignation of most of Amal's earliest senior members.