 Two of them were shot down during the attack.While returning to Japan, Vice Admiral Chūichi Nagumo, commander of the First Air Fleet, ordered that "Sōryū" and "Hiryū" be detached on 16 December to attack the defenders of Wake Island who had already defeated the first Japanese attack on the island.The two carriers reached the vicinity of the island on 21 December and launched twenty-nine D3As and two B5Ns, escorted by eighteen Zeros, to attack ground targets.