British machine gunners in anti-phosgene masks - 1916
I had meant to post this a few days back on the 11th, to mark the 90th anniversary of the armistice of the First World War. But somehow didn't get around to it. But here we are anyway, if a few days late.
It's a short history lesson in the form of animated maps progressing through a timeline from 1914-1918.
Here is a small embedded version.
But if you need a clearer (larger) view then click HERE for full screen.
Source: BBC History.