Well, refusal was considered desertion, and usually punished by death. Also see https://en.wikipedia.org/wiki/1917_French_Army_mutinies https://en.wikipedia.org

Well, refusal was considered desertion, and usually punished by death. Also see https://en.wikipedia.org/wiki/1917_French_Army_mutinies https://en.wikipedia.org/wiki/1917_French_Army_mutinies, soldiers were still in the trenches but refused attack orders.