9. Liaison during Attack. Usual liaison with artillery and aëroplanes—telephone lines to be established during attack—signals such as Bengal lights to show progress of assaulting companies.
10. Supply. Detachments (usually from supporting companies) to carry ammunition. Hour at which and points from which they will start.
11. Evacuation. Evacuation point for wounded and assembly point for prisoners.
Details not stated in this order. Time of attack—detailed instructions for barrage. Liaison to be established after attack—equipment to be taken. Information of the enemy not given as all officers have maps of enemy’s trenches as well as of their own trench system.
II. Order for the Attack
(Issued night before attack is to be made)
1. Time; i. e., hour H.
2. Further details of assault than given in previous order.
3. Further details concerning barrage, i. e., Halts to be made by barrage—rate of travel.
4. Liaison to be established after attack.