XV Corps message 17 June 1916
Messages and Signals form.
21st DIVL ARTILLERY
CA 46 17th
Please forward as early as possible total number of batteries (a) 18 pr (b) 4.5 How that in the event of assistance being required from either the 13th or 3rd CORPS during forthcoming operations could be brought to bear on these CORPS areas
15 CORPS ARTILLERY
3.30 p.m.
J.M.R. Harrison Major
