Somewhere near the German border on exercise with the Army in 1970-ish, heavy rain, deep trenches for infantry training. Us (RAF FAC section) in wet, muddy camouflage uniform trying to keep warm and relatively dry. Area received a visit by AOC RAFG and his ADC kitted out in their finest number ones plus greatcoat and very shiny shoes but sans sword. Watching them tip-toeing along duckboards which were slippery with mud. Squaddies and us trying to keep straight faces. Alas, neither AOC or ADC slipped on muddy duckboards.