by-product / rip telephone cables / lethal gas / gas/smoke cloud / gas discharge / confident gas / lucky and unintentional by-product / magic solution / gas masks / communications problems / communications trenches / bad communications / /
MusicGroup
The First / the Germans / /
Organization
Committee on Siege Artillery Material / German infantry / War Office / army / GHQ / British army / First Army / /
Person
Douglas Haig / Henry Rawlinson / William Robertson / John French / Gough / Noel "Curly" Birch / been in using 18-pounder HE to try to replace heavy howitzers / /