Talk:Expedition/@comment-114.124.27.9-20150414115503/@comment-5380363-20150414154735

Currently, Expedition #34 and #35 only works for World 5. Limited Time Events (such as the upcoming Spring 2015 Event) have their own unique Support Expeditions which become available as soon as the event maps are released.

Sending support expeditions on the Limited Time Events are not mandatory, but often times you'd find them very helpfyl if you're having trouble dealing enough damage to enemy fleets.