Training For Combined Operations -- Vice Admiral Lord Louis Mountbatten discussing the scheme with troops taking part. Frequent exercises take place to train units for Combined Operations so that when a "show" takes place every thing shall work with clock-work regularity. Vice Admiral Lord Louis Mountbatten, the Chief of combined Operations takes the keenest interest in these exercises. As he says "We never make the same mistake twice", and he sees to it that experience gained in actual raids is put into practice during subsequent training. Those pictures show personnel taking part a recent exercise. July 1, 1942. (Photo by British Official Photograph).