Tartes at the White House

I found these old photographs without any further information than that they were taken in 1918. Chasseurs Alpins (or "Blue Devils") at the White House in Washington DC. Whether the war was finished at that time or still being fought, I don't know.

Interesting to see these grand berets at this location. If you have any further information about this, please let me know - I would love to learn more!