From a manning perspective, it's the perfect storm.
Many are being thrashed to death and don't have time to consider the bigger picture about careers, pensions etc and are fed up of wives, children and loved ones wondering who the strange man trudging in through the front door every few weeks is.
Those that aren't being thrashed quite so hard and do have a shred of spare capacity to consider the broader implications of current life in the services don't like what they see. Political indifference and mouth music, cuts cuts and more cuts (and that's when we're at war .... what will happen whe we are not?) pensions being trashed, potentially significant tax bills if you some how get promotion and the prospect of rejoining the thrashing once their 'respite tout is over.
It's hard to see how we are going to stop this one; not so much a service on the buffet to be sorted with a timely stall recovery, I think the wings are about to fall off.