Editing Chemical weapons in World War I (section)

===British testimony===
{| class="wikitable floatright"
|+ British forces gas casualties on the [[Western Front (WWI)|Western Front]]{{Citation needed|date=September 2011}}
|-
! rowspan="2" | Date
! rowspan="2" | Agent
! colspan="2" | Casualties (official)
|-
! Fatal
! Non-fatal
|-
| April–May 1915
| [[Chlorine]]
| align="right" | 350
| align="right" | 7,000
|-
| May 1915 – June 1916
| [[Tear gas|Lachrymants]]
| align="right" | 0
| align="right" | 0
|-
| December 1915 – August 1916
| Chlorine
| align="right" | 1,013
| align="right" | 4,207
|-
| July 1916 – July 1917
| Various
| align="right" | 532
| align="right" | 8,806
|-
| July 1917 – November 1918
| [[Mustard gas]]
| align="right" | 4,086
| align="right" | 160,526
|-
| April 1915 – November 1918
| Total
| align="right" | 5,981
| align="right" | 180,539
|}

A British nurse treating mustard gas cases recorded:

{{Blockquote|They cannot be bandaged or touched. We cover them with a tent of propped-up sheets. Gas burns must be agonizing because usually the other cases do not complain even with the worst wounds but gas cases are invariably beyond endurance and they cannot help crying out.<ref>{{Cite book
 | first=Tim | last=Cook | year=1999
 | title=No Place to Run: The Canadian Corps and Gas Warfare in the First World War
 | publisher=UBC Press | isbn=0-7748-0740-7 }}</ref>}}

A [[postmortem]] account from the British official medical history records one of the British casualties:

<blockquote>Case four. Aged 39 years. Gassed 29 July 1917. Admitted to casualty clearing station the same day. Died about ten days later. Brownish pigmentation present over large surfaces of the body. A white ring of skin where the wrist watch was. Marked superficial burning of the face and [[scrotum]]. The [[larynx]] much congested. The whole of the [[vertebrate trachea|trachea]] was covered by a yellow membrane. The [[bronchi]] contained abundant gas. The lungs fairly voluminous. The right lung showing extensive collapse at the base. Liver congested and fatty. Stomach showed numerous submucous haemorrhages. The brain substance was unduly wet and very congested.<ref>{{Cite book |first1=T |last1=Harris |first2=J. |last2=Paxman |year=2002 |title=A higher form of killing: the secret history of chemical and biological warfare |publisher=Random House, Inc |isbn=0-8129-6653-8 |url=https://archive.org/details/isbn_9780812966534 }}</ref></blockquote>