it’s interesting to try out the payed squads from logistics but it’s a shame you can’t tryout squads, weapons, vehicles from campaign levels. I think it would motivate people to play more if they know that theres a good tank for example that waits for them in the next level.
You can if you have the previus level of the squad you want try unlocked
Tldr: you are lv10 and can try lv11 squad