Complex sentence: It was a small palisaded fort with a bastion at each of its four corners, and containing five main buildings: a "corps de garde", storeroom, barracks, blacksmithy, and a building for the officers.
Split into simpler sentences: It was a small palisaded fort with a bastion at each of its four corners. The × fort consisted of five buildings: a "corps de garde", storeroom, barracks, blacksmithy, and a building for the officers.