Battle Formation. The imperial soldier gains +2 to its AC when within 5 ft. of an ally of the imperial soldier who is not incapacitated.   Discipline. The imperial soldier has advantage on saving throws to resist fear effects.   Grit. If damage reduces the champion to 0 hit points, unless the damage is from a critical hit, the champion must make a Constitution saving throw with a DC of 5 + the damage taken. On a success, the champion is reduced to 1 hit point instead.   Momentum. When the champion deals damage with a weapon attack, the champion's subsequent weapon attacks before the end of the turn deal an additional 1d6 damage.