The flow of the battle in this map seems to be dictated many times by the naval forces in the game. When the IJN can get down near A1 it's pretty easy to pin the allies in the corner. That happened on Friday night. Now tonight (sunday) the allies who enjoyed a 2:1 advantage in #'s later in the evening started the push back up the island chain a few hours earlier when they still had the advantage but only by 2-3 people. And every succesfull field capture was supported by off shore shelling by the heavy guns of the fleet. Sea power is the key to success on this map.
