f May our tents were struck, wagons parked, assembly sounded, and the troops were under arms at three A. M., marched at four o'clock, and bivouacked within ten miles of Point Isabel.
No one was advised of the cause of movements, but all knew that our general understood his business.
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 provision was not made complete for Arista to make prompt crossing of the river, and that gave General Taylor time to reach his base, reinforce it, and draw sufficient supplies.
Advised of our move by General Mejia, at Matamoras, General Arista was thrown into doubt as to whether our move was intended for Matamo