Resilient Victory (Arathi Basin): http://www.wowhead.com/achievement=161/resilient-victory
Wednesday March 7, 8:00 Server Time
The Perfect Storm (Eye of the Storm): http://www.wowhead.com/achievement=783
Thursday March 8, 8:00 Server Time
Read the strategy for each here: http://www.mmo-champion.com/threads/816988-Battlemaster-Guide-Willbender-of-Kil-Jaeden
Please have at minimum 3k resilience and battleground addons (Battleground Targets and Healers have to die!)
Reply here or whisper me in-game if you are interested in one or both events and I will send you an invite.