Draconic Devotion. While the officer can see a Dragon that isn't hostile to it, the officer has advantage on attack rolls.
Multiattack. The officer makes two Vicious Lance attacks and uses Assault Orders if it's available.
Vicious Lance. Melee Weapon Attack: +5 to hit, reach 10 ft., one target. Hit:8 (1d10 + 3) piercing damage plus 2 (1d4) fire damage.
Heavy Crossbow. Ranged Weapon Attack: +4 to hit, range 100/400 ft., one target. Hit:7 (1d10 + 2) piercing damage plus 5 (1d10) fire damage.
Assault Orders (Recharge 5–6). The officer shouts orders and targets up to two other creatures within 60 feet of itself. If a target has the Draconic Devotion trait and can hear the officer, the target can use its reaction to make one melee attack.
The Dragon Armies gather fanatical followers to their ranks. Recruits are indoctrinated to revere the Dragon Queen and view dragons as her favored servants. Troops in the Dragon Army wield weapons blessed by Takhisis to strike with the power of the dragons they fight alongside.