Germany did split its army (and to some degree also its air force) into crisis reaction and other forces. It sucked.

Budget was tight, so crisis reaction forces got adequate personnel and almost adequate material funds, but the rest was neglected and atrophied.
NEVER establish a two-class military under the umbrella of the same GHQ. Separate active and reserve forces, united only at the level of ministry - acceptable. Divided army - not acceptable.


2nd; why bother with a single Div HQ if so many brigades are in the army? The would all be deployed in a big war, so simply call it a Corps HQ and design it as such.


3rd; looks like only three tank battalions for the entire UK army to me - that's approx. 200 Chally2 including driving training tanks and tanks in major repairs etc. That is hardly enough; the UK army would not be capable of mobile warfare against a real, capable army.


4th; helicopters overrated, as usual.