sentences:  An unlikely success also came in the 1999-00 Welsh Cup when Caerleon reached the quarter-final, losing 4–1 at home to Bangor City.Caerleon resided in the Welsh Football League Division One for numerous seasons but were relegated to Division Two for the 2010–11 season.They finished in third place in Division Two in the 2011–12 season and were promoted back to Division One.