TheCodeBreakers
When the search pilot returned, it was discovered that the "two carriers
and four heavy cruisers" had resulted from a disarrangement of his
codepad; they should have been reported as "two heavy cruisers and two
destroyers." But another contact report alerted the fliers to the presence
nearby of the landing force itself, escorted by the light carrier Shoho.
They swarmed over Shoho and sank it in ten minutes—a record for the
war. "Scratch one flattop!" exulted one pilot. The transports, shorn of
their air cover, retired to the northward. This accidental attack on the
wrong force thwarted the main Japanese objective and, since the
transports never again entered the Coral Sea, lifted the threat of invasion
from Australia.
Fletcher could hardly foresee this, however, and next day he located
the main Japanese force of two big carriers and attacked them at the
same time that they spotted and attacked him. It was the first naval
annaabi.ee 
