 Captain Oca reoccupied the presidio in early 1770, but, like his predecessor, he abandoned it for good later that same year.Despite charges of the presidio's uselessness, its presence on the banks of the San Sabá River significantly diminished Comanche raids against the Spanish missions and settlements around San Antonio and the Rio Grande Valley.Settlers arriving in the 19th Century used the stones from the presidio's walls to build house, out-buildings and corrals.