1. If from a flank.

Retire by Companies (or Sub-divisions) from the left (or right) in rear of the right (or left).Left (or Right) Company—Company (or Sub-division)—Right about face—Quick march—Right (or Left) shoulders forward—Forward. When at inward flank of right (or left) Division—Right (or left) shoulders forward—Forward.
The other Divisions follow in succession.

2. If the Retreat is from both flanks.

Retire from both flanks by sub-divisions in rear of the centre.Right (or left) Sub-division—Right about face—Quick march—Right (or left) shoulders forward—Forward. When arrived at the proper points—Right (or left) shoulders forward—Forward.
Remaining right, and left Sub-divisions follow in succession. Two centre Sub-divisions, when the Divisions next to them have commenced their second wheel—Right about face—Quick march.

S. 20. A Battalion in Line to march off in Column of divisions, successively to a flank.

1. If the Movement is along the rear, and from the right flank.

The Battalion will move in Column of Divisions (or Sections) from the right along the rear.Right Division (or Section)—Left face—Left wheel—Quick march—Front turn.

2. When the Movement is from the left flank.

Left Division (or Section)—Right face—Right wheel—Quick march—Front turn.

In both movements the Divisions follow in succession the leading division.