"The squabble over who was to command what in the Pacific went on. King argued that speed was essential, further delay would allow the Japanese to recover from their Midway defeat and to resume their offensive in the Solomons. Reminding Marshall of their earlier agreement that the Army would exercise supreme command in Europe, King expected a quid pro quo in the Pacific. But with or without Army support, King intended to invade the Solomons. He instructed Nimitz to proceed with his invasion plans even though "there would probably be some delay in reaching a decision on the extent of the Army's participation." Marshall pondered King's ultimatum for three days. His mood worsened when he received an agitated dispatch from MacArthur, who was furious, almost paranoid, at King's presumptuousness in ordering Nimitz into MacArthur's area. The Navy, said MacArthur, was conspiring to reduce the Army in the Pacific to no more than an occupation force. Marshall finally suggested on 29 June that he and King talk about who would command the operation. (Incredibly, the two men up to this point had only exchanged memoranda.) King readily agreed. MacArthur's insistence that he command all operations in his area became irrelevant by the simple expedient of moving Nimit's western boundary line into MacArthur's territory. The result was that Nimitz's South Pacific Area was enlarged to include the eastern Solomons, including Tulagi. Vice Admiral Robert L. Ghormley would command the eastern Solomons assault, identified as Task I. Subsequent assaults, referred to as Tasks II and III, would follow in the western Solomons, eastern New Guinea, and the Bismarck Archipelago. As these latter areas were still in MacArthur's domain, the General would be in command. After nearly a month of haggling, King and Marshall were finally able to agree on their Pacific strategy on 2 July. The eastern Solomons landings would begin in 1 August 1942. The American counteroffensive in the Pacific was almost underway."
January 1, 1970
https://en.wikiquote.org/wiki/George_C._Marshall