Second Ypres 1915: The Great Gas Attack
- Blwyddyn: 2015
- Gwlad: United Kingdom
- Genre: Documentary, History, War
- Stiwdio: Battlefield History TV
- Allweddair: gas
- Cyfarwyddwr:
- Cast: Paul Oldfield, Ed Church, Mike Peters, Tom Dormer, Tim Saunders, Andrew Duff
