bigpigeon.us webpage WWII - Japan > South & SW Pacific < Solomon Is. - New Georgia, updated by RAC 19 May 2022.
Central Solomons - New Georgia, 30 Jun 1943 - 27 Oct 1943 
After Japanese ground forces abandoned Guadalcanal in early February 1943, Japanese aircraft continued air attacks, using a forward air base completed in December 1942 at Munda on New Georgia Island. ​

I don't summarize the long and complex New Georgia Campaign, which also included the capture of both Rendova and Vella Lavella, an island just west of Kolombangara. By the time combat on New Georgia ended, the Japanese had evacuated their large garrison on Kolombangara.

Several naval battles accompanied the New Georgia Campaign, and are mentioned in the Solomons Naval War webpage.
The New Georgia Campaign
The New Georgia Campaign
Sources for the The Solomon Islands - New Georgia webpage:​
  • The New Georgia Campaign map is courtesy of en.wikipedia.com
  • The 20 July battle in northern New Georgia during which fifty Americans, including Dale Maassen, were killed is described in https://en.wikipedia.org/wiki/Battle_of_Bairoko.

​Pottawattamie Area WWII Dead - The Solomon Islands - New Georgia:
  • See also the Solomons Naval War webpage.​
06-05 - South & SW Pacific > The Solomon Islands - New Georgia: (four dead, updated 9 Oct 2021)
† Babcock, Victor Ross, SN 37-428-855, US Army, Harrison Co.
  • 145th Inf. Regt., 37th Inf. Div.; KIA 25 Jul 1943, New Georgia, Solomon Is.; Operation Cartwheel - South & SW Pacific > Solomon Is. - New Georgia.​
† Eggers, Edward, SN 37-195-262, US Army, Crawford Co.
  • Co. A, 169th Inf. Regt., 43rd Inf. Div.; KIA 9 Jul 1943 Barike River, NE of Munda, New Georgia, Solomon Is.; Operation Cartwheel - South & SW Pacific > Solomon Is. - New Georgia.
† King, Clarence Rudolph, SN 37-112-581, US Army, Pott. Co.
  • Co. E, 161st Inf. Regt., 25th Inf. Div., KIA 2 Aug 1943 New Georgia, Solomon Is.; Operation Cartwheel - South & SW Pacific > Solomon Is. - New Georgia.
† Maassen, Dale George, SN 457309, USMC, Pott. Co.
  • 4th Marine Raider Bn.; KIA 20 Jul 1943 Bairoko, Kula Gulf area of New Georgia, Solomon Is.; Operation Cartwheel, Battle of Bairoko - South & SW Pacific > Solomon Is. - New Georgia.