Warlord

A fighter that follows the path of a Warlord leads their allies into battle and intimidates the enemies around them. 

Level 3: Commander's Battlecry

As a bonus action on your turn, you can yell orders to your allies to bolster their spirits. Choose a number of allies within 30 feet of you equal to your Charisma modifier. Those allies each gain advantage on the next attack roll, saving throw, or ability check they make. You can do this a number of times equal to your Charisma modifier (minimum of 1), regaining all expended uses upon a Short or Long Rest.

Level 3: Fierce Spirit

You gain the following abilities.

Commanding Presence. You have proficiency in Intimidation and Persuasion.
Intimidating Glare. As a bonus action, you can force a creature within 5 feet of you to attempt a Wisdom saving throw with a DC equal to 8 + your Proficiency Bonus + your Charisma modifier. On a failed save, you gain advantage on the next attack roll you make against it, and it gains the Frightened condition until the end of your next turn.
Strong-Willed. You have advantage on saving throws to avoid or end the Charmed or Frightened condition.

Level 7: Impose Order

You can quickly command an ally to prepare for action. As a bonus action, you can allow a creature of your choice within 30 feet of you to take a reaction to perform one of the following acts:

Defend. The selected creature gains a +1 bonus to Armor Class until the start of your next turn.
Fall Back. The selected creature can move up to their walking speed without triggering any attacks of opportunity.
Strike. The selected creature can make a weapon attack against a creature within range, dealing half the normal damage on a hit.

Level 10: Invoke Fright

You can cast Fear as a 3rd level spell without a spell slot a number of times equal to your Charisma modifier (minimum of 1), regaining the ability to do so upon a Long Rest.

Level 15: Unbreakable Spirit

You have immunity to the Charmed and Frightened conditions, and you have resistance to Psychic damage.

Level 18: Artist of War

You can use your Commander's Battlecry at will. In addition, when you hit a Frightened creature with a weapon attack, you deal an additional 5d4 Force damage.