attitude is, in fact, unjustified as there is nothing in the wording of the extract from CCS.109/1 in paragraph 5 above, which precludes delegation of duties to the Americans, which they alone can carry out. The Commander-in-Chief is enjoined to "ensure" security etc., i.e. he must retain ultimate responsibility, but this does not necessarily entail an inalienable undertaking to use British troops in every variety of this duty. A large part of our Security system for the railway must of necessity consist of detailed routine inspections of engines and rolling stock which can only be carried out by the organisation responsible for the operation and control of the railway, in other words, in this case by the American themselves.