You forgot to add that the RAF input has only cost him some stale cheese sandwiches."And completely fail to deliver on a much vaunted promise to recruit the reserves back to 38,000 after being made to re show plans by the PM....."
I think that is the absolute crux of the matter. If Dave is re-elected and the Army fail to deliver what they promised, then they have reason to be afraid. Dave has invested a LOT of his own capital in getting the AR uplift, and I am left with the impression that failure will result in some very nasty conversations along the lines of
"since 2010 the RN and RAF have won me a war in Libya, given me the ability to achieve effect in Iraq, given me options for Syria and helped in me Sierra Leone among other places. The Army has given me multiple political headaches, and damaged my standing. Explain again why we need an army of 82000 when you've failed to deliver the success you promised you could do.'