b. Battalion medical sections accompany their battalions, the battalion surgeon with the battalion command group and company aid men with their respective companies. The medical assistant, MAC, the aid station squad, and the litter bearers march in rear of the foot elements of their battalion. Medi- cal vehicles with the aid station equipment move with vehicles of the motor column.
c. Motor ambulances from the ambulance platoon of the collecting company of the division medical battalion are attached to marching troops for the collecting and evacuation of march casualties. When attached, the ambulances are under direct control of the regimental surgeon. If but one ambulance is with the regiment, it follows the headquarters sec- tion of the regimental medical detachment at the rear of the column. If additional ambulances accom- pany the column, they may be placed at the rear of battalion medical sections. On development of the regiment, ambulances revert to division control.
d. Sick and disabled soldiers are ordinarily given permission by squad leaders to fall out of the marching column and report to the company officer marching in rear of the company. Company aid men render such emergency treatment as is required. The company officer marching in rear of the com- pany may direct the soldier to report to the medical assistant, MAC, at the next halt, or he may issue a permit authorizing him to drop out of the column and await the arrival of the medical assistant, MAC. The medical assistant, MAC, marching with the