I was told by a Wing SO (so it must be true) that the Army staff the Mil CRB at Imber Barracks in York. He reckoned that they prioritise ACF applications over ATC (and possibly SCC as well). Sounds good, but far more likely that it's not staffed/resourced properly, hence the backlog. No point in spending more money on it, as there's no operational advantage in doing so, will be their thinking.