As a French Marine Reserve Officer, I suggest you read this website (in French and with an English Version). This is an unofficial website for Troupes de Marine:
http://www.troupesdemarine.org/index2.htm

Cordialement
Lieutenant (US: 1/LT) de réserve Stéphane TAILLAT
Régiment d'Infanterie-Chars de Marine (former "Régiment d'Infanterie coloniale du Maroc, founded in 1915)