United States. War Department, Manual for Noncommissioned Officers and Privates of Infantry of the Army of the United States…
“ On the march the grain ration is the only forage carried. It consists of 12 pounds of grain for each horse and 9 pounds of grain for each mule. Recourse must be had to grazing if it is not possible to procure long forage in the country traversed. In campaign a command carries as a part of its normal equipment the following forage: (a) For each draft animal: On each vehicle a reserve of one day's grain ration for its draft animals. ”
