Thanks for the answer.
Do You have, by chance, any access to more detailed breakdown between particular sub-units of the battlegroup? Some TO&E's or something similar? It can be in Finnish, I can google-translate it, but since only words in Your language I know are "Suomi", "Talvisota" and "Muumi" I have no chance to find such info on my own.
That's still looks like a huge number - assuming that typical Western mechanized company has around 13-14 IFV/APC's, and even with extra support weapons carried on more armored vehicles it would be in the ca. 20/company range I had trouble to imagine use for more than ca. 100 of them. Sorry for digging it up like that, but I'm simply interested in topics of military organization.
Anyway, I'm really looking forward to see more updates to this thread.