Does attrition scale with the number of troops in multi-nation armies ?
Asking as I recently tried to fight a coalition as Italy using the famous 'Alpine Fortresses' trick - unfortunately, the 15 different armies sat in the Alps took zero losses - came down with full morale and manpower; the nations didn't seem to lose much manpower themselves.
Therefore - is attrition applied to the 5k Rothenburg, 5k Hamburg, 10k Bohemia etc etc individually, as if there were only 5 instances of 5k troops there, rather than 1 instance of 25k ?
It made for a spectacularly short war, anyway - the AI siege bonuses meant that I had time to smash three big Austrian stacks before the fortress fell and Northern Italy become German via simple numbers