left (or right)

(DOD, NATO) 1. Terms used to establish the relative position of a body of troops. The person using the terms "left" or "right" is assumed to be facing in the direction of the enemy regardless of whether the troops are advancing towards or withdrawing from the enemy. 2. Correction used in adjusting fire to indicate that a lateral shift of the mean point of impact perpendicular to the reference line or spotting line is desired.