Captain Apple, as a British Army Officer of a certain age, (we probably joined up at the same time, although at opposite ends of the spectrum) you ought to be able to pursue the "no win - very little cost" option of representing yourself.
Your lack of legal training and relevant qualifications would be taken into account by the court and gain you some considerable leeway.
What, if anything do you have to lose? During my service as an lowly airman, I met a few Army officers and since leaving, I have come to know a good few more. All of whom, even the **** who worked in Edinburgh Castle, struck me as capable of standing up in court and giving a fair account of themselves.
Success in such an endeavour would leave the entire proceeds for yourself as opposed to funding a firm of Ambulance chasers. Failure would at least provide some sport and the makings of a good book about David & Goliath.