I liked 'The Fort' a lot, though it does feel a little slow a times. This, I think, is mainly due to the fact that Cornwell has adhered rather strongly to the actual facts of the historical events depicted in the novel. It leaves less room for Sharpesque heroics but makes the story seem all the more realistic for it. At times I wasn't entirely sure whether I was reading a fictional novel or a factual account; very well done, Mr. Cornwell.
Two things make me give 'The Fort' three, rather than four stars: One is the ending, which I think is somewhat abrupt; I know the story had to end at some point, but perhaps it could have been done a little more elegantly. The second element that makes me downgrade the rating is the simple fact, that the American War of Independence has never held much interest for me. That's hardly Cornwell's fault, but then, this is my review.