Talk:Winter 2015 Event/@comment-58.152.32.223-20150207014732/@comment-25335868-20150207043928

If you cleared the map, as in fully kill the boss and got the rewards from that map, then yes; you're basically screwed.

I can't link you the page because I'm on mobile but you need to send the whole fleet with certain ship combinations WITH at least 2 DDs for them to work. My experience is that they're I'll have a chance to show up at a random node to attack the enemies once at the start of the battle. The boss expedition only shows up in the boss node in all my events so I'm not sure if the support expeditions will appear to help more than once each sortie. For info on what fleet combination to use to what effect, I suggest you go to the expeditions page and scroll down to find the "support expedition" section.