Dassault designed the Mirage F1 as the successor to its Mirage III and Mirage 5 fighters. The Dassault Mirage F1 is a French single-seat air-superiority fighter and attack aircraft, but has seen service in many air forces around the world. The F1 was the most successful of the Mirage series, most significantly because almost all of its users have used it in wars and regional conflicts.