Nearly 100% of 'Civie', for the military, instructors have a CFS qualification and many hours in uniform (I say nearly 100% as I looked and can't find any thing different - didn't go into VGS as no experience there). Most Mil instruction is specific to the type and a bit removed from PPL - but there are similarities. There is no reason why you couldn't apply (especially if you have the type rating?) but the bar is normally set high to catch those looking to leave the military but stay in flying instruction who already have experience/FI rating on type. As mentioned befor, the worst you could do is chat to Assent, Cobham or Babcock? It's not that easy to get a job as an A2 (CFS) with x,000s of hours, but, never give up.