...846, to move from his camp at Corpus Christi to the Rio Grande, opposite the Spanish city of Matamoras, because Mexican troops were gathering in that direction. This was disputed territory between Texas and the neighboring province of Tamaulipas. When he encamped at Point Isabel, March 25, on the coast, 28 miles from Matamoras, Taylor was warned by the Mexicans that he was upon foreign soil. He ...