the division was formed on mobilization with 14 brigade replacement battalions. each brigade replacement battalion was numbered after its parent infantry brigade, and was formed with two companies taken from the replacement battalion of each of the brigade's two infantry regiments. in two cases, a brigade replacement battalion drew from three regiments. thus, collectively, the 12 brigade replacement battalions represented troop contributions from 30 different infantry regiments. four brigade replacement battalions were from the kingdom of württemberg; two were from the grand duchy of hesse; four were from the prussian rhine province; two were from the prussian province of hesse-nassau (one with troops from the former duchy of nassau, the other from the former electorate of hesse); and two from the imperial territory of alsace-lorraine. the infantry units were augmented with cavalry, artillery and combat engineers, also drawn from "ersatz" formations.