by Midas » Thu Jan 30, 2014 2:38 pm
You can't leave guild 24 hours before start of GW and through all GW duration.
But if you are not belong to any guild - you can join guild with free slots in the middle of War.
To know when GW start - read notifications on main game screen, where now you see Jewel Dragon timers.
Last one just finished, so next will be in 3-4 weeks.
Midas aka Howrus. GM of Fairy Tails.