While the battle was underway at Yudam-ni, the PVA 59th Division blocked the road between Yudam-ni and Hagaru-ri by attacking the defending Charlie and Fox Companies of the 7th Marines. The successful assault forced Charlie Company to retreat into Yudam-ni, which left Fox Company commanded by Captain William E. Barber isolated on a hill overlooking the Toktong Pass, a vital pass that controlled the road. On 29 November, several efforts by the 7th Marines failed to rescue Fox Company, despite inflicting heavy casualties on the Chinese. Aided by artillery from Hagaru-ri and Marine Corsair fighters, Fox Company managed to hold out for five days while enduring constant attacks by the PVA 59th Division.