STAR WARS : TALES OF THE JEDI – THE SITH WAR (1995) #1

The Mandalorians, led by Mandalore the Indomitable, wage war on the Teta system. Mandalore challenges Ulic Qel-Droma to a duel, which Ulic accepts on the terms that if he wins, he shall receive control of the Mandalorian warriors. Ulic wins, and recruits Mandalore and his army to fight for the Sith. They begin to plan an attack on Coruscant.