Somehow CSS and engineer units can be amalgamated and renamed and they continue on just fine; why are the infantry, artillery and armoured such snowflakes?
What CSS and Engineer Units were amalgamated?
Ultimately if the Military needs to stand down one unit and stand up another then so be it.
I look at 15 Field Regiment and 5th BC Field Regiments. I know the 5th has gone from Regt to Bty back to Regt. I know the men and women serving had no issues with the situation. Nor did they have any issues closely cooperating with 15 Field Regt at the time and amalgamating services.
Personally I would say Stand down all current Regiments in the Military reg and Reserve.
Then stand up 1CDn Division. Then each Brigade in each Geographical region be numbered 1-13 Start east to west.
Take into account each Brigade may not have the same numbers and functions but equip each one the same with unused equipment put into war stocks. Each Brigade gets allocated 2 Infantry Regiment 4 Battalions, 1 Tank Regiment 4 Troops, 1 Artillery Regiment 4 Btys, 1 Engineer Regiment 4 Troops. All can be numbered Battalion, Troop, can be called 1, 2,3,4 etc.
One badge across the entire nation with a number denoting where your from. A fancy Trade badge on the Velcro sleeve with a number beside it denoting what Unit.
You can fit the Reserve units within the Regular Force structure as Numbered Units as required. They can be more dispersed as they are now. With requirements to full fil contracts.
Or leave things the way they are now, allocate proper funding and equipment so the Units can hit proper strengths.