I think I failed my campaign attempt. I built up my one hero. Took the Sift Sands region, and then spent like 20 turns running back and forth trying to chase drive by threats until I had a city plundered here or there or just fell behind in the technology. This later point is an issue for me as I don’t understand the progression for elves. They seem VERY building dependent and I am so starved for cash that I am just trying to get economic buildings.
I think I am going to restart, but this time get a second stack ASAP that is just the warden/ unit chaser in territory as I use my main stack to advance actual objectives. I think I will also dabble with @strategy 's advice and get some Sea Guard. My attempts to have a mix of Rangers and Spear units to hold the line for my archers was not working. My best battles were garrison troops that just held a line with Spearmen as archers shot away.