Appendix to 21st Divisional Artillery Instruction 21 June 1916

APPENDIX II

Day U. V. W. X. Y. REMARKS
Wire Cutting All day All day All day All day All day
Registration – As required As required As required As required On V day heavy guns and howitzers must register.
General Bombardment – – All day All day All day Heavy Howitzers stop on W, X and Y days for a fixed period.
Concentrated Bombardments – – 9 a.m. to 10.20 a.m. 4.30 a.m. to 5.50 a.m. 6 a.m. to 7.20 a.m. In each case smoke will be used for the last 5 to 10 mins of those concentrated bombardments
Counter-Battery All day All day All day All day All day Very Active.
Gas – At night 2 hours. At night 2 hours. At night 2 hours. At night 2 hours. Gas one night only, first time wind permits.
Night firing All night All night All night All night All night