Guadalcanal Campaign - Landings

Landings

Further information: Battle of Tulagi and Gavutu–Tanambogo

Bad weather allowed the Allied expeditionary force to arrive in the vicinity of Guadalcanal unseen by the Japanese on the morning of August 7 and take the defenders by surprise. The landing force split into two groups, with one group assaulting Guadalcanal, and the other Tulagi, Florida, and nearby islands. Allied warships bombarded the invasion beaches while U.S. carrier aircraft bombed Japanese positions on the target islands and destroyed 15 Japanese seaplanes at their base near Tulagi.

Tulagi and two nearby small islands, Gavutu and Tanambogo, were assaulted by 3,000 U.S. Marines. The 886 IJN personnel manning the naval and seaplane bases on the three islands fiercely resisted the Marine attacks. With some difficulty, the Marines secured all three islands; Tulagi on August 8, and Gavutu and Tanambogo by August 9. The Japanese defenders were killed almost to the last man, while the Marines suffered 122 killed.

In contrast to Tulagi, Gavutu, and Tanambogo, the landings on Guadalcanal encountered much less resistance. At 09:10 on August 7, Vandegrift and 11,000 U.S. Marines came ashore on Guadalcanal between Koli Point and Lunga Point. Advancing towards Lunga Point, they encountered no resistance except for "tangled" rain forest, and they halted for the night about 1,000 yards (910 m) from the Lunga Point airfield. The next day, again against little resistance, the Marines advanced all the way to the Lunga River and secured the airfield by 16:00 on August 8. The Japanese naval construction units and combat troops, under the command of Captain Kanae Monzen, panicked by the warship bombardment and aerial bombing, had abandoned the airfield area and fled about 3 miles (4.8 km) west to the Matanikau River and Point Cruz area, leaving behind food, supplies, intact construction equipment and vehicles, and 13 dead.

During the landing operations on August 7 and August 8, Japanese naval aircraft based at Rabaul, under the command of Sadayoshi Yamada, attacked the Allied amphibious forces several times, setting afire the transport USS George F. Elliot (which sank two days later) and heavily damaging the destroyer USS Jarvis. In the air attacks over the two days, the Japanese lost 36 aircraft, while the U.S. lost 19, both in combat and to accident, including 14 carrier fighters.

After these clashes, Fletcher was concerned about the losses to his carrier fighter aircraft strength, anxious about the threat to his carriers from further Japanese air attacks, and worried about his ships' fuel levels. Fletcher withdrew from the Solomon Islands area with his carrier task forces the evening of August 8. As a result of the loss of carrier-based air cover, Turner decided to withdraw his ships from Guadalcanal, even though less than half of the supplies and heavy equipment needed by the troops ashore had been unloaded. Turner planned, however, to unload as many supplies as possible on Guadalcanal and Tulagi throughout the night of August 8 and then depart with his ships early on August 9.