Does anyone have any information on how or whether the Federal medical units during the Mexican Revolution wore Red Cross brassards or other identification? I know the Red Cross symbol goes back to the 1860s, but I have not found any pictures or text of its use by Mexican forces during the Mexican Revolution. I have read that Mexican forces on both sides of the revolution used boxcars as mobil hospitals so clearly there must have been some formal medical units. I would appreciate any information you can provide.