 On 15 June, she departed with the Mobile Fleet for Operation ""A-Go"", a counterattack against Allied forces in the Mariana Islands.Her strike waves suffered heavy losses from US combat air patrols and anti-aircraft fire, but some survived and returned safely to the carrier.One of her D4Y "Suisei" strike groups, composed of veterans from the Coral Sea and Santa Cruz engagements, broke through and one plane allegedly struck home with a bomb that damaged the battleship and caused many casualties, but this group suffered heavy losses themselves.