we agree that the column structures were more important to them. The ONLY column that had sufficient depth to form a square as opposed to a closed column was the column on a single zug frontage. That column was not intended for use in combat. It was only an interim formation for use between march column and the angriffekolonne. It didn't make sense to train for countering cavalry in two different ways, so I see the reason for using only the closed column. Training should always focus on simplicity, especially for emergency procedures.