Hoplite

The hoplites of Greece were trained in the art of making fewer soldiers greatly effective against many. Implementing a phalanx formation, the hoplites would form a sturdy wall of shields and spears making them a nigh unstoppable unit. Hoplites were protected by bronze armor if they could afford it or more commonly linothorax, a combination of linen and glue. They fought primarily with doru (spear) and aspis (shield) as well as a xiphos (short sword) at their side. The ranks of the hoplites were often made up of various free peoples who could afford weapons and armor. At the time of their recruitment, most lacked formal military training and far fewer could be considered professional soldiers. It was through teamwork and great effort that a group of hoplites could topple a massively overwhelming enemy force.

Phalanx Warrior

When you choose this archetype at 3rd level, you gain fundamental knowledge about phalanx formations and group combat. Whenever you have an allied creature adjacent to you, you gain advantage on all melee attack rolls. If you have two allies adjacent to you, you also grant advantage on all melee attack rolls to those allies and have advantage on all Strength and Dexterity saving throws.

Vanquisher of Armies

Starting at 7th level, your courage on the battlefield allows you to overcome insurmountable odds. If there are more hostile creatures within 60 feet of you than friendly creatures, add your Fighter level to all damage you deal. If the number of enemies is double or more than the number of allies, you may also add your proficiency bonus. This feature only applies if you are aware of the enemies and their number.

Fighting Forms

Starting at 10th level, after countless combat drills and the use of leather straps to stabilize your shield around your forearm, you can quickly adapt to the constantly changing battlefield. Once per turn you may instantly don or doff your shield as a free action and are now immune to having your shield disarmed. Additionally, the first time an enemy would move within 5 feet of you, you can use your reaction to draw your shield and xiphos (short sword) and make an attack.

Offensive Defense

Starting at 15th level, every attack you hit during a round increases your AC by 1 until the beginning of your next turn.

Wall of Death

Starting at 18th level, you have mastered formation strategy and lead your companions in perfect unison. A creature is considered in formation if they form a single chain of adjacent units. All creatures in formation gain +1 to attack and damage for every creature in the formation up to a maximum of +10. Additionally, if a creature in formation drops to 0 hit points, they instead drop to 1 hit point. This can only happen once per creature per combat.