Take the Dash action as a Bonus Action and gain 2 Temporary Hit Points. Kaelgor can use this trait four times, regaining all expended uses when he finishes a Short or Long Rest.

As a Bonus Action, you can regain 1d10 + 4 Hit Points. You can use this feature three times, regaining one expended use when you finish a Short Rest and all expended uses when you finish a Long Rest.

When reduced to 0 Hit Points but not killed outright, Kaelgor drops to 1 Hit Point instead. Once used, this trait returns after a Long Rest.

Once per turn when Kaelgor hits with a weapon, he can roll the weapon's damage dice twice and use either result.

When Kaelgor rolls a 1 or 2 on a damage die for a two-handed Greatsword attack, he can treat the die result as a 3.

Immediately after Initiative is rolled, Kaelgor can switch his Initiative with a willing ally in the same combat, provided neither is Incapacitated.

You gain the Great Weapon Fighting Fighting Style feat. When you roll damage for an attack with a Melee weapon you are wielding with two hands, you can treat a 1 or 2 on a damage die as a 3, though you must use the new roll. The weapon must have the Two-Handed or Versatile property.

You can use the mastery properties of four Simple or Martial weapons of your choice. Kaelgor has mastered the Greatsword, Flail, Javelin, and Spear.

On your turn, you can take one additional action, except the Magic action. You can use this feature once per Short or Long Rest.

When you fail an ability check using a skill with which you have proficiency, you can expend a use of Second Wind to add 1d10 to the check, potentially turning failure into success. The use of Second Wind is not restored until you finish a Short or Long Rest.

Your attacks with weapons and Unarmed Strikes score a Critical Hit on a d20 roll of 19 or 20.

You have Advantage on Initiative rolls and Strength (Athletics) checks. Immediately after scoring a Critical Hit, you can move up to half your Speed without provoking Opportunity Attacks.

You gain the Alert Origin feat. You add your Proficiency Bonus to Initiative rolls, and immediately after Initiative is rolled, you can switch your Initiative with a willing ally who is also in the same combat, provided neither of you is Incapacitated.

Soldier's training gives Kaelgor proficiency with Athletics and Intimidation, proficiency with one Gaming Set, and the Savage Attacker Origin feat. He also retains the discipline, battlefield awareness, and practical habits learned during military service.