Your constitution by 2, and your strength score increases by 1.

Whenever you make an Intelligence (history) or Wisdom (Perception) check related to  militaristic ranking and tactics, you are considered proficient in the History and Perception skills and add double your proficiency bonus to the check, instead of your normal proficiency bonus.

Proficiency with all martial ranged weapons

When you move 20 feet in a straight line and end within 5 feet of a creature, you may use your action to attempt to knock it over. That creature must succeed on a strength saving throw(8 + your strength modifier + your proficiency bonus). On a failure, the creature takes 2d6 bludgeoning damage and is knocked prone.

You ignore the loading property of firearms  

Age at roughly the same rate as humans

You can read speak and write common and one language of your choice.