I just finished the Fort Colovia Delve quest, and I swear I have done that quest before, not quite exact, but similar, with a legionaire, or someone in a various group like that, following you, commenting about how the person didn't have to kill the legionaires we find dead along the way, needing to find various things like a payroll, and then at the end of the quest it is revealed that the 'big boss' is a legionaire that defected.
There were some minor differences, for one, the follower in the previous quest wasn't as cowardly as the one in the West Weald Quest, and the follower was a friend of the boss in the other quest.
I also, though I can't be positive, want to say that the other quest was more focused on a fort than the delve quest is(ie, you weren't going through caves and a ruined fort but rather going through the actual fort itself, and the exterior)
However, I can't find it, so not sure if I am imagining it, experiencing a case of Deja Vu, or just don't know what keywords to look for. Or maybe it is a combination of multiple different quests that I am remembering that all got jumbled together in my mind. I have found a different quest that has pretty much the same ending, where you could choose one of three options, but the rest of the quest doesn't fit.
Any help would be appreciated.