MCRP 12-10B.1, page 105

Sleep and alert plans Security Limited visibility Control of noncombatants. j. The company should install a wire net and develop a plan for pyrotechnic signals to ensure adequate communications. Backup wire should be laid in case primary lines are cut by vehicles, fires, or the enemy. The commander also plans for the use of messengers . 3302. Delay in a Built-Up Area. A rifle company may be assigned the mission to delay in a built-up area.(Figure 3-13). To perform this mission, a rifle company can destroy enemy reconnaissance elements forward of the outskirts of the town, prevent their penetration into the built-up areas, and gain and maintain contact with the enemy to determine the strength and location of the main attack. Figure 3-13. Delay in a Built-Up Area a. Platoons delay by using patrols, OPs, and ambushes. Following each action, a platoon will disengage and withdraw. b. The company’s sector should be prepared with obstacles to enhance the delay. Engineers should prepare obstacles on anticipated enemy main routes of advance. MCWP 3-35 .3 3-33