The Japanese have completed the 1st phase of their
conquest and are now embarking on phase 2 to expand
their defensive sphere to the Southeast.

Historically the allies contested the Japanese move
into the South Pacific which resulted in the battle 
of the Coral Sea in the first few days of May.

The Japanese achieved this tactical victory by sinking
the Lexington,  Sims and Neosho and damaging the Yorktown
at the cost of Shoho and a few minor combatants lost and
Shokaku damaged.

The Allies achieved a strategic victory,  however, as the
invasion of Port Moresby was thwarted and,  arguably as 
important,  the Japanese 5th Carrier Division was out of 
action for three months due to the damage to the Shokaku
and the depletion of the carrier air groups. Events at
Midway the following month were to prove just how
disastrous for the Japanese this turned out to be.