Meanwhile, to the north of Mount William, Marine Sub-Lieutenant Eduardo Villarraza's N Company of the 5th Marines (N/BIM5) occupied Mount Tumbledown. At 10.30 p.m., they were attacked from Goat Ridge by 2nd Scots Guards. About 300 metres from the first Argentine position, the Marines opened fire with MAG machine-guns and FAL rifles. Both British forward platoons started to take casualties and the Scots Guards retreated to the western rocks and reorganized themselves. Argentine shells began landing among the Guards but by 2.30 a.m., part of the high ground was in British hands and the situation of the Argentine forces became uncertain. In the centre of the mountain, one Scots Guards platoon managed to secure a small piece of high ground, where they were able to set up a fire base that pinned down several Marine positions for the remaining five hours of the battle. Commander Robacio ordered Marine Sub-Lieutenant Eduardo Villarraza to send a fighting patrol to deal with the fire base. Marine Sub-Lieutenant Hector Miño with 5th Platoon accompanied by Second Lieutenant Augusto La Madrid (Argentine Army) with 3rd Platoon. Meanwhile, members of the Marine N Company (N/BIM5) were ordered to remain under cover during a bombardment by Argentine artillery. However, using the cover of British artillery, the Scots Guards advanced upon the Argentine positions. Marine Private Jorge Sanchez, in the book "5th Infantry Brigade in the Falklands" (Leo Cooper, 2003), recalled: