The order by echelon on one or both wings; 11th.
The order by echelon on the centre; 12th.

The combined orders of attack on the centre and one wing at the same time.
(Figure 14.)[10] The simple parallel order is the worst possible disposition for a battle, for the two parties here fight with equal chances, and the combat must continue till accident, superior numbers, or mere physical strength decides the day; skill can have little or no influence in such a contest.
[Footnote 10: In the plans, B is the army in position, and A the attacking force arranged according to the different orders of battle.

To simplify the drawings, a single line represents the position of an army, whereas, in practice, troops are usually drawn up in three lines.

Each figure represents a grand division of twelve battalions.] (Figure 15.) The parallel order with a crotchet on the flank, is sometimes used in a defensive position, and also in the offensive with the crotchet thrown forward.

Malplaquet, Nordlingen, Prague, and Kolin, are examples of this order.