As a gas expert, Sydney helped with the issuing of gas helmets.
1918
March 26th
I superintend fitting of 250 men of Brigade at Race course, 51 KOYLI, 51 Notts & Derbys.
27th Ditto 400 Notts & Derbys.
28 I fit men of 52nd Notts & Derbys at Redmines, Sheffield.
Proceeding with gas cylinder in car (general’s) at 8.30 am.
Diary of Sydney Spencer of Cookham (D/EX801/12)