Drifting smoke from the aerial bombardment of Target Hill, obscured the beaches and the approaches, and briefly hampered the landing with some troops coming ashore in the wrong spot. Nevertheless, the first wave made landfall around Yellow 1 one minute after H-Hour followed two minutes later at Yellow 2. There was no opposition in the vicinity of these two beaches, but the small group from the 3rd Battalion, 7th Marines which landed northwest of Yellow 1 by mistake came under fire from machine guns firing at maximum range from a number of bunkers after pushing through the thick jungle to locate the coastal trail. Throughout the morning, follow-up troops from the remainder of the 1st Marines came ashore and pushed through the 7th Marines, to begin the advance north towards the airfields. The landing area to the north of Borgen Bay, was surrounded largely by swamp, with only a small narrow beach along which the Marine infantry and their supporting Sherman tanks from the 1st Tank Battalion could advance towards the airfields. This slowed the advance inland and resulted in heavy congestion on the beaches, hampering the unloading process.