Pulling my hair out over Capt. Calhaan

I have completed Defend the Wall, but am unable to find Capt. Calhaan to start the Great Northern Wall Mission. My map has the shield marking the Great Northern wall location, but no swords.

Go to the Great Northern Wall outpost, form your party, and click on the "enter Mission" button in the party window. Once you enter the mission, you'll find him rather quickly.

aaaah the very first proph mission
i dunno if its really mentioned anywhere, but yea basically jus hit "enter mission"

u'll come across a bunch of missions which u'll have to do the same in
u'll kno its a mission because they're always in an outpost thats marked by a shield on the map

the swords indicate whether or not u've completed the mission
left sword = primary objective complete
right sword = bonus objective complete

From ascalon city, hit "m" then click on the Northern Wall shield to enter the outpost. In the party box is "Enter Mission." You'll be staring at the Captain upon entering. He'll have a "!" over his head.