How do you perform the hand and arm signal for Line Formation?

The hand and arm signal for Line Formation is performed by extending the arms parallel to the ground. This position clearly communicates the intention for troops to align themselves side by side in a straight line. Extending the arms parallel not only signifies the formation visually but also provides a clear and unambiguous signal to all personnel regarding the desired positioning.

Other signals, such as raising one arm above the head, moving arms in a circular motion, or pointing directly forward, signify different commands and would not effectively communicate the specific formation of a line, potentially leading to confusion among the troops. Thus, extending the arms parallel to the ground is the correct and recognized method for signaling a Line Formation.