Statement of Significance (as of designation - December 19, 1960):
In the early hours of May 9, 1846, after the battle of Palo Alto, Mexican forces under Maj. Gen. Mariano Arista retreated to Resaca de la Palma; Brig. Gen. Zachary Taylor and his army gave pursuit and the fighting resumed. Taylor ordered his cavalry to charge the Mexican position, sending the enemy into disarray. The Mexican commander narrowly escaped capture, his tent and all his personal effects falling into the hands of the attackers; his forces fled across the Rio Grande while all the Mexican artillery and supplies fell to the victorious Americans.