Data cards in Barbarossa

Hello I'm new to Battlegroup and I recently bought the rule book and Tobruk. I'm putting together my first BG mini order (1/285 scale) and was going to order the Data cards for the early German vehicles (since there not in Tobruk). But it occurred to me that they are probably included in the Barbarossa book, is this correct? If so I might just buy that instead since the next theater I want to play is the eastern front.

Thanks

No data cards in Barbarossa, way before we created them. The datacards are just in the datacards sets, with a few updates when needed in new books.

Thanks for the information.