Bonjour from France,
I suggest to translate this Wikipedia article :
http://fr.wikipedia.org/wiki/Croix_de_guerre_1914-1918_%28Fr... It is not awailable in English.
Perhaps can you write to and give the maximum of infos:
Service historique de la Défense
Avenue de Paris
Château de Vincennes
94306 Vincennes cedex
Good luck
Pierre JACQUOT