Elements of Military Art and Science / Or, Course Of Instruction In Strategy, Fortification, Tactics Of Battles, &C.; Embracing The Duties Of Staff, Infantry, Cavalry, Artillery, And Engineers; Adapted To The Use Of Volunteers And Militia; Third Edition; With Critical Notes On The Mexican And Crimean Wars.

by H. W. Halleck

[15.]—Parallel order, with a crochet on the flank.

[16.]—Parallel order, reinforced on a wing.

[17.]—Parallel order, reinforced on the centre.

[18.]—Simple oblique order.

[19.]—Oblique order, reinforced on the assailing wing.

[20.]—Perpendicular order.

[21.]—Concave order.

[22.]—Convex order.

[23.]—Order by echelon on a wing.

[24.]—Order by echelon on the centre.