Board Thread:Game Updates/@comment-26154973-20170127091618/@comment-26574811-20170127094526

631 Air group = the air group aboard I-400 and I-401.

There are claims that the devs stated that there will be no attack on Panama Canal, so the only possible one for Winter Event is Operation Arashi (no, not your destroyer Arashi).

It's a planned attack on Ulithi Atoll in July 1945, but the fleet received the order to stand down due to Japanese surrender on 16 August, one day before the attack.