Hi,
France issued many commemorative medals and souvenirs during The Great War. British regiments and services were engaged in the Western front and military personnel sent millions of souvenirs back home (silk postcards. sweetheart handkerchiefs, tea cozies, doilies, pillow covers etc made both in France and Belgium).
This particular medal was most probably issued to commemorate the end of the first year of The Great War.
A. Fiot was probably the medalist who created your medal; the maker is in the lozenge. Inscription in English means it was dedicated to ``Effie`` and sent back to UK.
Compare with General Galleini medal. As the Germans swept towards Paris in 1915, General Galleini, the Military Governor, swore that they would fight “Until the end " (Jusqu'au Bout). The French stopped the German advance at the Marne River. He is commemorated with the issue of this medal.
Regards
