SECRET. Sa/31.

O.C. all Batteries.

The procedure laid down in my Sa/27 which was to have taken place at 5 a.m. this morning will take place at 5 a.m. on 17th inst.
ACKNOWLEDGE

V.C. Ritchie Lt. R.F.A.
ADJUTANT: 23rd A. Bde. R.F.A.
15.7.17.