Just wondering about people's opinions of Encampments. I rarely seem to build them. I can never decide which city is "right" for them. High production is of course useful, and I suppose it's useful to place the Encampment where it can threaten enemies or block a path. Thing is tho I usually find by the time i get around to Encampnents I have already built my core army anyway and now it's not worth it. What are your strategies?