Between 9 and 11 October the U.S. 1st Battalion 2nd Marines raided two small Japanese outposts about east of the Lunga perimeter at Gurabusu and Koilotumaria near Aola Bay .
Between 9 and 11 October the U.S. 1st Battalion 2nd Marines attacked two small Japanese outposts about 30 mi east of the Lunga perimeter at Gurabusu and Koilotumaria near Aola Bay .