The Union of Resistance Forces (URF) was one of the rebel groups fighting in the War in Chad (2005–2010). It was backed by Sudan. In 2008, the fighters were equipped with small arms and vehicles bearing a UFCO logo. It confirmed that their fighters had clashed with Chad's government forces in the southeastern Salamat region in May, 2009 in what is called the Battle of Am Dam. In April 2010, their fighters along with other rebels clahshed with government forces in Eastern Chad in what is called the Battle of Tamassi