Marks are a labour of love. I agree with the notion that: A. follow your heart, or B. spread the marks around depending on the unit.
My philosophy is, for an undivided army, apply marks as they relate to the unit. For example, if you had an IW army, maybe give Mark of Nurgle to your termies or Helbrutes to denote their tanky aesthetic or role. Mark of Khorne to your Raptors, etc.
My philosophy is, for an undivided army, apply marks as they relate to the unit. For example, if you had an IW army, maybe give Mark of Nurgle to your termies or Helbrutes to denote their tanky aesthetic or role. Mark of Khorne to your Raptors, etc.