Vandegrift’s plans for the landings would put two of his infantry regiments (Colonel LeRoy P. Hunt’s 5th Marines and Colonel Cates’ 1st Marines) ashore on both sides of the Lunga River prepared to attack inland to seize the airfield. The 11th Marines, the 3d Defense Battalion, and most of the division’s supporting units would also land near the Lunga, prepared to exploit the beachhead. Across the 20 miles of Sealark Channel, the division’s assistant commander, Brigadier General William H. Rupertus, led the assault forces slated to take Tulagi, Gavutu, and Tanambogo: the 1st Raider Battalion (Lieutenant Colonel Merritt A. Edson); the 2d Battalion, 5th Marines (Lieutenant Colonel Harold E. Rosecrans); and the 1st Parachute Battalion (Major Robert H. Williams). Company A of the 2d Marines would reconnoiter the nearby shores of Florida Island and the rest of Colonel John A. Arthur’s regiment would stand by in reserve to land where needed.
As the ships slipped through the channels on either side of rugged Savo Island, which split Sealark near its western end, heavy clouds and dense rain blanketed the task force. Later the moon came out and silhouetted the islands. On board his command ship, Vandegrift wrote to his wife: “Tomorrow morning at dawn we land in our first major offensive of the war. Our plans have been made and God grant that our judgement has been sound ... whatever happens you’ll know I did my best. Let us hope that best will be good enough.”
[Illustration: _MajGen Alexander A. Vandegrift, CG, 1st Marine Division, confers with his staff on board the transport USS _McCawley_ (APA-4) enroute to Guadalcanal. From left: Gen Vandegrift; LtCol Gerald C. Thomas, operations officer; LtCol Randolph McC. Pate, logistics officer; LtCol Frank B. Goettge, intelligence officer; and Col William Capers James, chief of staff._
At 0641 on 7 August, Turner signalled his ships to “land the landing force.” Just 28 minutes before, the heavy cruiser _Quincy_ (CA 39) had begun shelling the landing beaches at Guadalcanal. The sun came up that fateful Friday at 0650, and the first landing craft carrying assault troops of the 5th Marines touched down at 0909 on Red Beach. To the men’s surprise (and relief), no Japanese appeared to resist the landing. Hunt immediately moved his assault troops off the beach and into the surrounding jungle, waded the steep-banked Ilu River, and headed for the enemy airfield. The following 1st Marines were able to cross the Ilu on a bridge the engineers had hastily thrown up with an amphibian tractor bracing its middle. The silence was eerie and the absence of opposition was worrisome to the riflemen. The Japanese troops, most of whom were Korean laborers, had fled to the west, spooked by a week’s B-17 bombardment, the pre-assault naval gunfire, and the sight of the ships offshore. The situation was not the same across Sealark. The Marines on Guadalcanal could hear faint rumbles of a firefight across the waters.