TheCodeBreakers
In the spring of 1943, Admiral Isoroku Yamamoto came down to
Rabaul to take personal charge of the deteriorating situation in the
Solomon Islands. Japan had just been pushed off Guadalcanal and her
supply lines were being snarled by Allied air attacks. Yamamoto welded
together the biggest Japanese air armada of the war and sent it against
the Allies, achieving some tactical successes. In preparation for further
aerial offensives, the stocky, black-browed seaman decided to make a
one-day morale and inspection tour of bases in the upper Solomons.
Those bases would have to be alerted, together with several other units,
so that they could make the many preparations needed for an inspection
by the Commander in Chief Combined Fleet. At 5:55 p.m. on April 13,
1943, the commander of the 8th Fleet broadcast Yamamoto's itinerary of
five days hence to the 1st Base Force, the 26th Air Flotilla, all
annaabi.ee 
