Figueroa's next step in implementing his instructions was to name Lieutenant Vallejo as Military Commander of the Northern Frontier and to order the soldiers, arms and materiel at the Presidio of San Francisco moved to the site of the recently secularized Mission San Francisco Solano. The Sonoma Barracks were built to house the soldiers. Until the building was habitable, the troops were housed in the buildings of the old Mission. In 1834, George C. Yount, the first Euro-American permanent settler in the Napa Valley, was employed as a carpenter by General Vallejo.