The landings were timed to take place in conjunction with similar operations at Nassau Bay, in New Guinea, and on Woodlark and Kiriwina.
After sailing from Guadalcanal on June 29, the Allied landing force, Task Force 31, was hampered by rain and fog.
The main ground combat element assigned to this force was Major General John H. Hester's 43rd Infantry Division.
The task force's approach was covered by Catalinas flying night patrols through the Blanche Channel.
In the pre-dawn hours (approximately 02:25 hours) the American destroyers USS Talbot and USS Zane detached from the main force to land New Zealand-trained and led Fijian and Tongan commandos and Companies A and B of the American 169th Infantry Regiment  on Sasavele Island and Baraulu Island.
The islands were quickly secured, although Zane, due to poor visibility, became grounded on a reef, remaining so until the afternoon.
These islands were strategically important because they are located just off the coast of New Georgia and control the entrance to Roviana Lagoon from the Blanche Channel.

Admiral Richmond K. Turner commanded the invasion fleet—consisting of four transports and two supply ships, screened by eight destroyers—from his flagship, the attack transport McCawley.
A small advanced party of two companies from the 172nd Infantry Regiment was sent ashore around Rendova Harbor guided by a British officer, Major Martin Clemens and Lieutenant Frederick Rhoades, a Royal Australian Navy officer.
Along with a small group of local police constables, they intended on linking up with an Australian coastwatcher, Flight Lieutenant Dick Horton, who would assist them in establishing the beachhead prior to the main landing.
Strong winds pushed the advanced party off course and ultimately they did not make contact with Horton until the first wave was making its run to the shore.
After arriving at the correct beach, Clemens and Rhoades led their men in a quick attack on a house in Rendova Plantation, killing two Japanese behind the beach.

By 06:00 hours, the main Allied landings on Rendova, delivering troops from the 43rd Division, had begun, albeit chaotically.
The U.S. Marine Corps' official history describes the initial landing as "hurried", "[having] all the appearance of a regatta rather than a coordinated landing" and "chaotic in the extreme"; nevertheless, troops from the 103rd Field Artillery Battalion, along with Marines from the 9th Defense Battalion and Seebees from the 24th Naval Construction Battalion secured the beach although they were hampered by sporadic sniper fire.
The appearance of a Japanese "Betty" bomber which circled the landing zone but did not attack also slowed progress.
The Japanese defenders reported back to their commanders that "due to the tenacious interference by enemy fighter planes, a decisive blow could not be stuck against the enemy landing convoy" and that the landings were an "absolutely miraculous" and "speedy disembarkation of the enemy."

Following the first echelon, the 43rd Division's assistant commander, Brigadier General Leonard Wing, and Vice Admiral William F. Halsey, in command of the operation to secure New Georgia, waded ashore under sniper fire after their boat became grounded about 50 yards (46 m) from the beach.
 The 2nd Battalion, 172nd Infantry Regiment established a defensive perimeter around the beachhead, but experienced trouble digging-in due to the heavily waterlogged ground.
Eventually, they were forced to move their defensive lines to higher ground.
As the invasion progressed American supplies crowded the beaches as infantry pushed the Japanese defenders inland.
The 9th Marine Defense Battalion, in addition to skirmishing with Japanese forces, began securing and clearing their predefined artillery position objectives and the Seabees from the 24th Naval Construction Battalion began clearing an encampment for a medical aid station.
The Seabees' work was hampered by sniper fire, while the heavy rain quickly turned the ground to mud which disrupted the movement of vehicles and heavy tractors that were tasked with dr
The landings were timed to take place in conjunction with similar operations at Nassau Bay, in New Guinea, and on Woodlark and Kiriwina. After sailing from Guadalcanal on June 29, the Allied landing force, Task Force 31, was hampered by rain and fog. The main ground combat element assigned to this force was Major General John H. Hester's 43rd Infantry Division. The task force's approach was covered by Catalinas flying night patrols through the Blanche Channel. In the pre-dawn hours (approximately 02:25 hours) the American destroyers USS Talbot and USS Zane detached from the main force to land New Zealand-trained and led Fijian and Tongan commandos and Companies A and B of the American 169th Infantry Regiment  on Sasavele Island and Baraulu Island. The islands were quickly secured, although Zane, due to poor visibility, became grounded on a reef, remaining so until the afternoon. These islands were strategically important because they are located just off the coast of New Georgia and control the entrance to Roviana Lagoon from the Blanche Channel. 
Admiral Richmond K. Turner commanded the invasion fleet—consisting of four transports and two supply ships, screened by eight destroyers—from his flagship, the attack transport McCawley. A small advanced party of two companies from the 172nd Infantry Regiment was sent ashore around Rendova Harbor guided by a British officer, Major Martin Clemens and Lieutenant Frederick Rhoades, a Royal Australian Navy officer. Along with a small group of local police constables, they intended on linking up with an Australian coastwatcher, Flight Lieutenant Dick Horton, who would assist them in establishing the beachhead prior to the main landing. Strong winds pushed the advanced party off course and ultimately they did not make contact with Horton until the first wave was making its run to the shore. After arriving at the correct beach, Clemens and Rhoades led their men in a quick attack on a house in Rendova Plantation, killing two Japanese behind the beach.
By 06:00 hours, the main Allied landings on Rendova, delivering troops from the 43rd Division, had begun, albeit chaotically. The U.S. Marine Corps' official history describes the initial landing as "hurried", "[having] all the appearance of a regatta rather than a coordinated landing" and "chaotic in the extreme"; nevertheless, troops from the 103rd Field Artillery Battalion, along with Marines from the 9th Defense Battalion and Seebees from the 24th Naval Construction Battalion secured the beach although they were hampered by sporadic sniper fire. The appearance of a Japanese "Betty" bomber which circled the landing zone but did not attack also slowed progress. The Japanese defenders reported back to their commanders that "due to the tenacious interference by enemy fighter planes, a decisive blow could not be stuck against the enemy landing convoy" and that the landings were an "absolutely miraculous" and "speedy disembarkation of the enemy."
Following the first echelon, the 43rd Division's assistant commander, Brigadier General Leonard Wing, and Vice Admiral William F. Halsey, in command of the operation to secure New Georgia, waded ashore under sniper fire after their boat became grounded about 50 yards (46 m) from the beach.  The 2nd Battalion, 172nd Infantry Regiment established a defensive perimeter around the beachhead, but experienced trouble digging-in due to the heavily waterlogged ground. Eventually, they were forced to move their defensive lines to higher ground. As the invasion progressed American supplies crowded the beaches as infantry pushed the Japanese defenders inland. The 9th Marine Defense Battalion, in addition to skirmishing with Japanese forces, began securing and clearing their predefined artillery position objectives and the Seabees from the 24th Naval Construction Battalion began clearing an encampment for a medical aid station. The Seabees' work was hampered by sniper fire, while the heavy rain quickly turned the ground to mud which disrupted the movement of vehicles and heavy tractors that were tasked with dr
Landings on Rendova