sentences:  A total of 2,500 troops from the 2nd Amphibious Brigade were assigned for transport from Mindanao; they were to be escorted by a force under Rear Admiral Naomasa Sakonju, consisting of the battleship "Fuso", the heavy cruisers "Aoba", "Myoko" and "Haguro", the light cruiser "Kinu", and eight destroyers (five as part of the screen and three as part of the transport element).They were scheduled to reach Biak on 3 June; other forces were to be transported from Manokwari by barge.Admiral Teijirō Toyoda, commander of the Japanese Mobile Fleet, initially attempted to reinforce Biak to hold the airstrips, but his first reinforcement sent 1 June was turned back when a Japanese scout plane mistakenly reported a US aircraft carrier in the vicinity.