WWI · SITE OF MEMORY ·
Chlorine gas attack at Ypres (1915)
On the WWI map as “Gas at Ypres”
22 Apr 1915 — A green-yellow chlorine cloud rolls over French colonial troops at Langemarck: the first mass poison-gas attack. By 1918 gas has killed some 90,000 and maimed a million more. Remember what industrial chemistry did here.
- When
- Type
- Site of memory
- Chapter
- Gallipoli and the widening of WWI (chapter 6 of WWI)
- Atlas
- The Great War, 1871–1923
Open this map in the interactive atlas →
Chapter 6 is part of membership. WW2 is free — every chapter. Try chapters 1–2 of any 2 other atlases (3 with a free account). Opening a new atlas uses one of them. Membership opens all 21 — Join.

In the same chapter
Related
THE FREE PRINTABLE STUDY GUIDE
Join the Dispatch — a short welcome series, then a letter when a new atlas opens — and the printable study guide for WWI is yours now, free.
NO TRACKING · YOUR ADDRESS IS USED FOR THE DISPATCH AND NOTHING ELSE · UNSUBSCRIBE ANYTIME