broadening of the attack to dissipate the KPA's concentrated resistance. He urged General de Shazo to let 1st Battalion, 9th Regiment move across the Mundung-ni Valley and seize Hills 867 and 1024 located about and , respectively, southwest of Hill 894. If the KPA assumed that this attack marked the beginning of an envelopment of Heartbreak Ridge from the west, they might well divert men and guns to block the challenge, Lynch reasoned. But de Shazo rejected the proposal since General Clovis E. Byers, the X Corps commander, had earlier directed that Hill 931 be given first priority. When Maj. Gen. Robert N. Young, the new 2nd Division commander, arrived on 20 September, he decided that Lynch's plan was sound. He ordered Lynch to take Hills 867 and 1024 and the 9th Infantry commander scheduled the attack on Hill 1024 for 23 September; Hill 867 would be seized after Hill 1024 fell. In the meantime. Van Fleet told Byers that it would be desirable for X Corps to advance its western flank to bring the front line into phase with U.S. IX Corps'. Thus, Byers, on 22 September, directed the Republic of Korea Army (ROK) 7th Division to capture Hill 1142, located about northwest of Hill 1024. The double-barreled attack upon Hills 1024 and 1142 might well cause the North Koreans to take the threat seriously and lessen their capacity to resist on Heartbreak Ridge. The attacks by the 23rd Infantry against Heartbreak Ridge had continued on 21 and 22 September with little success. The 1st Battalion, under Maj. George H. Williams, Jr., had tried again to take Hill 931 from the south, while Daniels' 2nd Battalion came in from the north. Elements of the 1st Battalion briefly won their way to the crest on 23 September, but could not withstand the KPA's counterattack. An early morning assault from the east by a company from the KPA 3rd Regiment, 12th Division, produced a fierce fight that decimated the 1st Battalion. When his ammunition ran out, Williams had to pull back his men from Hill 931. Across the Mundung-ni Valley the diversionary attacks against Hills 1024 and 1142 by the 9th Regiment and the ROK 7th Division made good progress. On 25 September the 1st Battalion, 9th Infantry, cleared the crest of Hill 1024 and the ROK 7th Division won Hill 1142 the following day. Recognizing the threat to neighboring Hill