Before revision: When selecting a (temporary) observation post, trained troops are to avoid obvious and conspicuous locations such as hilltops, water towers or other isolated terrain features, and to assure that the observation post can be reached via a concealed route.
After revision: When selecting a (temporary) observation post, trained troops are to avoid obvious and conspicuous locations such as hilltops, water towers or other isolated terrain features, and to ensure that the observation post can be reached via a concealed route.