Open Field Commanders Intro

TL:DR Open Field commanders are very important and all members should work on 1-2 pairs of legendary commanders to put together into marches.

Regarding how to choose commander pairings for open field fighting there are 2 schools of thought: Synergy vs Balance.

Synergy : Means how well do the skills/Talents of Commanders help the Skills of the other commander in that pairing. Classic example is YSG has a skill that boosts Active Skill Damage by 50%. To Synergize, you would pair him with a commander whose first skill (Active Skill) does Skill damage (Direct Damage Factor). Such as pairing YSG with Edward, Guan Yu, Khan, Saladin, or MinaMoto: in each of those YSG will boost the Direct Damage factor they do by 50%, which is GREAT.

Balance : Refers to pairing commanders who have different strengths. Such as pairing together a Tank (Richard or Charles) with a high DPS (Damage per Second) commander (Guan Yu or YSG). The skills of each are not necessarily going to help each other, BUT your march will have a mixture of survivability, damage and maybe even debuffing the enemy. If you do NOT balance, you might have highly synergistic marches like Edward YSG who get melted in the open field when swarmed or Tanks (Richard /Martel) that walk around for a long time but get you very little kills.