zPhase line as the line of departure, which also may be the line of contact (LC).zTime to initiate the operation.zObjective.2-267.Infantry leaders use all other control measures necessary to control the attack. Short of the LD or LC, the leader may designate AA and attack positions where the unit prepares for the offense or waits for the establishment of required conditions to initiate the attack. Beyond the LD or LC, leaders may designate checkpoints, phase lines, PLD, assaultpositions, and direct and indirect fire support coordination measures. Between the PLD and objective, a final coordination line, assault positions, support by fire and attack by fire positions, and time of assault to better control the final stage of attack can be used. Beyond the objective, the Infantry leader can impose a LOA if an exploitation or pursuit is not conducted. (Refer to FM 3-90-1 for more information.)
Chapter 2 2-86ATP 3-21.8 ±² $SULO ²³±´ORDER OF EVENTS 2-268.As the platoon leader plans for an attack, the order of events typically follow the sequence described in the paragraphs below. MOVING FROM THE ASSEMBLY AREA TO THE LINE OF DEPARTURE2-269.The tactical situation and order in which the leader wants his subordinate units to arrive at their attack positions govern the march formation. MANEUVERING FROM THE LINE OF DEPARTURE TO THE PROBABLE LINEOF DEPLOYMENT2-270.Units move rapidly through their attack positions and across the LD, which should be controlled by friendly forces. The leader considers METT-TC when choosing the combat formation which best balances firepower, tempo, security, and control. ACTIONS AT THE PROBABLE LINE OF DEPLOYMENT, ASSAULT POSITION2-271.The attacking unit splits into one or more assault and support forces as it reaches the PLD, if not already accomplished. All forces supporting the assault should be set in their support-by-fire position before the assault force crosses the LD. The assault force maneuvers against or around the enemy to take advantage of support force’s efforts to suppress targeted enemy positions. CONDUCTING THE BREACH2-272.As necessary, the platoon conducts a combined arms breach. The preferred method of fighting through a defended obstacle is to employ an in-stride breach. However, the leader must be prepared to conduct a deliberate breach. (Refer to appendix H for more information on breaching.) ASSAULTING THE OBJECTIVE2-273.The leader employs all means of direct and indirect fire support to destroy and to suppress the enemy, and to sustain the momentum of attack. Attacking units move as quickly as possible onto and through the objective. Depending on the size and preparation of enemy forces, it may be necessary to isolate and destroy portions of the enemy in sequence. CONSOLIDATING ON THE OBJECTIVE2-274.Immediately after an assault, the attacking unit seeks to exploit its success. It may be necessary, though, to consolidate its gains. Consolidation can vary from repositioning force and security elements on the objective, to reorganization the attacking force, to the organization and detailed improvement of the position for defensive missions.