In the opinion of the 1st Division’s historian and a veteran of the landing, the men on the approaching transports “thought they’d have a bad time getting ashore.” They were confident, certainly, and sure that they could not be defeated, but most of the men were entering combat for the first time. There were combat veteran officers and noncommissioned officers (NCOs) throughout the division, but the majority of the men were going into their initial battle. The commanding officer of the 1st Marines, Colonel Clifton B. Cates, estimated that 90 percent of his men had enlisted after Pearl Harbor. The fabled 1st Marine Division of later World War II, Korean War, Vietnam War, and Persian Gulf War fame, the most highly decorated division in the U.S. Armed Forces, had not yet established its reputation.
The convoy of ships, with its outriding protective screen of carriers, reached Koro in the Fiji Islands on 26 July. Practice landings did little more than exercise the transports’ landing craft, since reefs precluded an actual beach landing. The rendezvous at Koro did give the senior commanders a chance to have a face-to-face meeting. Fletcher, McCain, Turner, and Vandegrift got together with Ghormley’s chief of staff, Rear Admiral Daniel J. Callaghan, who notified the conferees that ComSoPac had ordered the 7th Marines on Samoa to be prepared to embark on four days notice as a reinforcement for Watchtower. To this decidedly good news, Admiral Fletcher added some bad news. In view of the threat from enemy land-based air, he could not “keep the carriers in the area for more than 48 hours after the landing.” Vandegrift protested that he needed at least four days to get the division’s gear ashore, and Fletcher reluctantly agreed to keep his carriers at risk another day.
On the 28th the ships sailed from the Fijis, proceeding as if they were headed for Australia. At noon on 5 August, the convoy and its escorts turned north for the Solomons. Undetected by the Japanese, the assault force reached its target during the night of 6-7 August and split into two landing groups, Transport Division X-Ray, 15 transports heading for the north shore of Guadalcanal east of Lunga Point, and Transport Division Yoke, eight transports headed for Tulagi, Gavutu, Tanambogo, and the nearby Florida Island, which loomed over the smaller islands.