Dogs in Gas Masks
If you like this, check out:
“The Collapsing Wall”, 1940s / 2010
Hyde Park, London, May 1944
Colour photographs of a bus in a crater, 1940
Ghosts of WWII
Ghosts of Auschwitz
Anne Frank: then and now
WWIII Propaganda
"Hitler's Stealth Bomber"
Richmond Golf Club Rules, 1940
Maunsell Forts
Colour photographs of before and after D-Day
Ghosts of Paris
Anti-Prostitution Posters, WWII
Hitler's Fake Passport,April 1941
Soldiers playing baseball, Northern France, WWII
Wojtek, the Soldier Bear
Soviet Women of WWII
The Queen in the Army, April 1945 
Douglas XTB2D Skypirate, 1945
Iranian "The Downfall of the Dictators is Assured" posters, WWII 
Abandoned P-40 Kitty Hawk, Sahara, 1942
You couldn’t get a cat to wear a gas mask.
What Mark said.