Tactician

The real masterminds of the battlefield are the Tacticians; those who lead, manipulate, and strengthen the troops around them. What good is a fighter if they can't plan out the battle around them; exploiting the enemies weaknesses, and plotting their own. To a Tactician, a battle is a game of chess and of strategic skill: understanding how to fight and do the most damage to cripple the opponent. Their mind is their best tool and they wield it with a deadly precision that will bring cities crumbling down.

Deadly Terrain

Beginning when you choose this martial archetype, you can now choose a favored terrain and have advantage on attack roles when fighting in this terrain. 

Advantage of the Arctic

Using ice and snow to your advantage in this mystical frozen world, whenever you perform an attack in the arctic terrain you gain advantage. 

Champion of the Coast

Using the shifting sands of the Coast to your advantage, whenever you are in this terrain you have advantage on attack roles.

Dominance of the Desert

Using the blazing hot sun and the sandy dunes to strengthen your attacks, whenever you make an attack role in this terrain you have advantage. 

Forcefulness of the Forest

Hiding in the tress and using the shifting sunlight to confuse and misdirect your opponent, now whenever you attack in the Forest terrain you gain advantage.

Gallantry of the Grasslands

Using the long grass and the open plains to your advantage, whenever you attack in the Grassland terrain you have advantage. 

Might of the Mountains

Using the rocky, unstable terrain to your advantage, whenever you make attacks on the Mountain terrain you gain advantage.

Staunchness of the Swamps

Using the mirky bog and the scariness of the swamp, whenever you make an attack in the Swamp terrain you gain advantage. 

Battle Plan

Starting at 7th level your mind is becoming one of your best weapons. Once per combat, as an action, you can give each of your allies advantage on their next attack roll. In addition to this, you can also give disadvantage on the next attack role to your enemies. You may choose (your STR Mod - 1 (minimum of 1)) enemies to be targeted. 

Battle Initiation

As you grow stronger and stronger, you become accustomed to giving orders and leading your allies into battle. Due to your readiness and capability of a leader, once you reach 10th level you can no longer be surprised and have a +3 bonus on Initiative.

Excellent Intuition

Starting at 15th level, at the start of combat you learn all the resistances, vulnerabilities, and immunities of the opponent. You have also grown so good at predicting your opponents move and countering it before it happens that all melee attacks against you, now have permanent disadvantage. 

Master Tactitian

As you have reached 18th level you have grown into a nearly unstoppable fighter whose tactical skill have become so strong that they leaves the enemies crushed and confused. As a now Master Tactician, everyone in your party benefits from your leadership; so they, and you, gain advantage on all attacks.