Brigadier-General Lucius Walker was assigned the task of guarding Marmaduke's flank and preventing Union reinforcements from reaching Rightor Hill. The main attack however, would take place in the center with Sterling Price's 3,100 men seizing Graveyard Hill and the battery protecting it. Marmaduke's assault ran into trouble quickly and began taking artillery and small arms fire from his left flank. Walker was supposed to intervene for Marmaduke, but failed to come to his aid out of concern for his own exposed position. Walker's failure would eventually lead to bad blood between Marmaduke and Walker that would end in a bloody duel during the campaign for Little Rock. The southwest and center elements of the Confederate attack also suffered from failed communications and misinterpreted orders. Fagan and Price failed to coordinate their attacks due to Holmes' vague order to "attack at daylight". Price interpreted this order to mean an attack at sunrise and Fagan interpreted it to mean an attack at first light. Fagan was surprised to find his attack on Hindman Hill was opposed by artillery fire from Graveyard Hill. Fagan had expected Price to be engaged already with that battery. Fagan's artillery had not been able to reach the battlefield because of felled trees blocking the road. Fagan had no artillery available to silence the Federal guns and had no choice but to order his troops to try to take the hill while under artillery fire. Fagan's men reached the summit of the hill and managed to seize the outer fortifications but were pinned down just short of the summit by the two Union batteries. Price's assault on the center of the Union lines did not commence for almost an hour after Fagan's attack began. Price's men charged the Federal lines but were repulsed by concentrated artillery fire from the batteries and the "Tyler". Price's Confederates made two more desperate charges before successfully capturing the guns on Graveyard Hill. Price attempted to turn the guns on the remaining Federals but found that the guns had been successfully disabled before their capture. The Confederates had achieved some success despite the miscommunications. Fagan held most of the fortifications to the southwest and Price held the high ground in the center of the Union lines. Holmes arrived on Graveyard Hill and failed to press his advantage home. Holmes was seemingly unable to decide if he should support Marmaduke on his left flank, Fagan on his right flank, or press his advantage in the center and instead issued a series of confusing orders that led to partial measures which failed to turn the tide in any of the three positions.