Grimgrim

Dear team, I'm a level 57 Orc Warrior and I can't seem to find the Commander Gor'Shack quest. I see that it is supposed to be offered by Galamav the Marksman, however when I speak with him he only offers me the quest "The Pack Mistress." I have completed both of the Disharmony of Flame and Disharmony of Fire quests. Please advise how I should proceed so that I may have this quest. Thank you! Sincerely, Grimgrim 57 Orc Warrior Elysium PvP