These parties will merge into the waves immediately in front of them before reaching their objectives.
Parties found by the 1/4th Royal Lancaster Regiment will be absorbed by their own unit as soon as it reaches them.
Parties found by the 1/4th Loyal North Lancashire Regiment will be furnished from fourth wave, and upon completion of their task will be absorbed by that wave as it passes over them.
Each mopping-up party will consist of one Platoon.
10. Trench Mortars.
One sub-section of trench mortars will assemble in CONGREVE WALK, close to the mined dugouts, and will move near Battalion Headquarters in the attack, ready to deal with any points of resistance that may hold out. They will take up position on the line D 14 Central—Toronto Farm, after all objectives have been taken.
11. Medical.
Aid post prior to advance I 4 a 6 4.
During the advance, the Medical Officer will move in rear of the centre of the Battalion and will establish an aid post in the vicinity of POMMERN CASTLE.