I have enjoyed playing Battlegroup so much that I have started painting up a force of German Pioneers with Stug support. I’m using the Barbarossa supplement. I had the Infantry in stock and have bought some Stugs and a Panzer IV. A mixture of Battlefront and Zvezda models. A Stuka in 144th scale works well IMHO.
Am working on some Opel Blitz trucks, 2cm AA and pak38 guns.
I have also bought quite a few Russian Infantry, tanks and supports quite cheaply secondhand.