sentences:  Less than a year later, Sinclair was promoted to squadron leader; due to his rapid rise through the ranks, the rumor of the day was that Sinclair was on the fast track to making Admiral.As squadron leader, Sinclair fought at the Battle of the Line, the last major battle in the Earth-Minbari War.During the course of the battle, his squadron was destroyed by the Minbari, and his fighter was badly damaged.