Does anyone know anything about the Fitness Categories assigned to solidiers. My late father returned wounded from France in 1940, his medical records show that because of his wound he was now assigned to category D. Later papers, when discharged back to barracks then show another reassignment to category C with a prognosis of a 6 month recovery period. However due to the nature of his injuries he once more had to be hospitalised and during this stay was once more re assessed and moved down to category E with a prognosis of no further improvement expected and discharged from service as being permanently unfit for duty. I have searched but cannot find any information on the category system employed then or now. I would presume that a grading system of some sort was applied after someone was wounded and the fitness category somehow dictated the mans ability to perform certain duties etc. Again I assume A would indicate fit for frontline, B for lesser duties etc etc on a scale down to indicate totally unfit for duty. Can anyone throw light on the category system and provide an indication of what the categories were and what sort of duties would be assigned to people in the categories.