 Yet the PVA main effort fell on Boulder City, and two battalions subsequently succeeded in occupying a portion of the American trench line.From these positions the PVA threatened to cut-off Company G, 3rd Battalion, 1st Marines on Hill 119, repeatedly assaulting the Berlin Gate feature on the company's left flank and the East Berlin Gate on its right in an effort to exploit their gains.Throughout the fighting the Marines were strongly supported by heavy mortar, artillery and tank fire; however, due to the prevailing weather conditions no spotter aircraft were able to fly during the night which limited the effectiveness of the indirect fire available to them.