Japanese transferring Rabaul into major base according to the U.S. Joint Intelligence Committee. Daily summary dated 24 February 1942

An item reported that according to the J.I.C. Japanese air and naval reinforcements kept arriving in the Rabual area which was rapidly growing into a major advanced base.

Source

Map Room Papers (Roosevelt Administration), 1942 - 1945. MR0423. U.S. Joint Intelligence Committee. Daily summary No. 76 dated 24 February 1942