TheCodeBreakers
Some elements of the Central Bureau were—despite the name—
attached to widely scattered units. MacArthur's chief signal officer,
Brigadier General Spencer B. Akin, who enjoyed more authority than any
other theater signal officer, attached communications-intelligence units
to major headquarters so that the intelligence would be promptly
available to officers who could act upon it. He even assigned one such
detachment to Admiral William F. Halsey, Jr.'s flagship, while Admiral
Spruance found the Army service so valuable, when he took command of
the 5th Fleet, that he kept the communications-intelligence specialists
with him.
In addition, Signal Corps radio intelligence companies provided
tactical, combat-level communications intelligence, One of the first, the
101st Signal Company (Radio Intelligence), replaced Hawaii's old Monitor
Post 5 in July of 1942, vastly improving the quantity and quality of the
work. Typical, perhaps, of these companies was the 138th. Trained in
annaabi.ee 
