Assembling a largely cavalry force, Pershing selected two infantry regiments to accompany the Pancho Villa expedition, the 16th and 6th Infantry Regiments. The long march into the interior of Mexico was hot and dusty. After several weeks of movement between Colonia Dublán and El Valle, the 16th Infantry finally settled in the latter place in June. There the soldiers built mud brick huts for quarters and returned to a garrison routine, except for occasional patrols into the nearby mountains and valleys to hunt for rumored Villistas. Though the cavalry had several clashes with Villista and federal forces, the infantry had an uneventful eight months. In February 1917, Wilson recalled Pershing's expedition from Mexico.