On the morning of August 1, 1867, pickets on a hilltop warned the soldiers and civilians in the hayfield of the approach of a large number of Indians. They raced for the log corral. Lt. Sigismund Sternberg of the U.S. Army's
27th Infantry, his 20 soldiers, and the 9 civilians quickly took refuge inside the corral. The Indians came so rapidly that they occupied the rifle pits outside the corral before the soldiers could control them; soldiers and civilians took cover behind the logs. After the first volley from the soldiers, the Indians rushed the corral, anticipating that the soldiers would take twenty or thirty seconds to reload their rifle-muskets. They were surprised when the soldiers quickly shot off a second volley, as produced by their new, faster firing, breech-loading rifles. The Indians broke off the attack, which gave the defenders time to improve their defenses by digging trenches and filling wagon boxes with dirt to stop bullets. Lt. Sternberg was killed by a bullet. Sergeant James Horton took command but was soon severely wounded. A civilian, D. A. (Al) Colvin, then directed the defense. The Indians charged the corral again from the bluffs to the east and south; they were again repulsed, but killed another soldier and wounded two more. Indians attempted to set fire to the grass and the lattice-work wall around the fort with flaming arrows, but the wind direction changed and the fire died out. Sniping between the two sides continued all morning. No reinforcements came from Fort Smith, although the sounds of the battle should have been audible to the soldiers in the fort. The Indians withdrew about noon and the soldiers refilled their water barrel in the river. The Indians resumed the attack that afternoon, but the soldiers were firmly entrenched. The Indians had little ammunition, and arrows had little effect on the soldiers behind the log barriers. The Indians shot at the pack animals, killing two and wounding severely 17 of the 22 mules in the corral. About one p.m., a Lt. Palmer guarding a train of wagons loaded with wood saw the fight from a hilltop and took the news to Colonel Murray inside Fort Smith. He reported that the hayfield corral was under attack of 800 Indians. Later, Private Charles Bradley escaped on horseback from the corral, galloping to the fort to tell of the attack. Murray ordered a force but did not send out the 20 mounted soldiers to investigate until 4 p.m., and they quickly came under attack. Murray reinforced them with a full company of soldiers, armed with a howitzer. The soldiers reached the corral about sundown, by when most of the Indians had already given up the attack and departed. At 8:30 p.m., all the soldiers had returned to Fort Smith. ==Aftermath==