As I think I many have noted before, even as an ex-soldier myself, one who joined a multi-divisional Army, with a deployed Corps and the slack to have 30,000 troops in NI while still maintaining the 'Wacht am Aller', I think I'm reasonably relaxed about running the Army down into a much narrower capability envelope and strength, with only a few high-capability light units maintained at high readiness and lots and lots of low-level engagement at a low technological level worldwide - provided, provided, that some thought has gone into the industrial and logistic processes which would be required to rebuild and re-establish a mass land component in the event of an existential threat.
It's not that clear to me why we would absolutely need to have a heavy Corps, or division, in Eastern Europe, given the absolute need for the NATO nations in that neighbourhood to generate, on their own behalves, sufficient peer-level forces to deter aggression. If the Poles, say, maintain - for the sake of argument - three or so full-strength modern Corps level formations, with state of the art kit, it's not clear what we could add to the party.
The Germans, if sufficiently scared, will have to step up. They won't/can't rebuild the Bundeswehr into its former 3-Corps state and 2 and 4 ATAF will remain shadows of their former selves, at least in terms of airframe numbers, but they can certainly generate, from kit at hand, provided it's taken out of pres and re-manned, at least a Corps equivalent, with added airpower.
Where we score, heavily, is in air and naval and that's probably where our main efforts should be deployed, at least in the NATO context.
