Pardon an intrusion from a civilian... I thought the real imjustice of LMF was in the way it was applied to aircrew who had gone out on missions, some of them many times, but had simply run out of steam before their tour was complete? Obviously I cannot know first hand, but I am told battle fatigue sets in at different times for different people.
Someone who refuses to serve at all may indeed be a coward, as may someone who goes once but never goes out again. Can anyone who has voluntarily gone on 2 or more missions be said to lack morale fibre?