Ultimately you will always need boots on the ground to hold taken ground. But do you need as many full time Bods for this Job?
As for the Air force I say we make it "Virtual"
Retain the RAF Flag and some of the Structure but manpower and budgets come from the other 2 services. where prudent to do so have common training and support.
Pro's
-Airpower doctorine is retained (whatever that is)
-Other 2 services have control of their assets (no infighting - THEORETICALLY)
-Operational & cost efficiencies
-Nobody has to wear a Naff looking uniform
Cons
- requirement for someone to ref The Army - Navy Rugby Match