I sat on medium/high level specialist NATO committees for six years, and was previously a TACEVAL trapper.
NATO served its purpose but relied heavily on the USA [thank you, Uncle Sam] and to a lesser degree on the UK.
Having seen how "Europe" has become dysfunctional in recent years, surely a Europe Army would be a toothless talking shop, a refuge for superannuated generals, with troops armed with broomsticks and ADAC helicopters.and a decision-making process that would still be mulling over Phase One at ENDEX.
Risible, and UK should have nothing to do with SUCH bogus entities, just stick to the wreckage of NATO.