...siness. He had been informed that General Arista, with his movable forces, had marched to Rancho de Longoreno, some leagues below us on the river, intending to cross and cut us off from the base at Point Isabel . Major Jacob Brown was left in charge of the works opposite Matamoras with the Seventh Regiment of Infantry, Captain Sands's company of artillery, and Bragg's field battery. By some accident pro...