 The battle marked the first time since the start of the war that a major Japanese advance had been checked by the Allies.More importantly, the Japanese fleet carriers "Shōkaku" and —the former damaged and the latter with a depleted aircraft complement—were unable to participate in the Battle of Midway the following month, while "Yorktown" did participate, ensuring a rough parity in aircraft between the two adversaries and contributing significantly to the U.S. victory in that battle.The severe losses in carriers at Midway prevented the Japanese from reattempting to invade Port Moresby from the ocean and helped prompt their ill-fated land offensive over the Kokoda Track.