As it stands all vehicles provide green cover for infantry standing next to them (it doesn't matter if it's a Tiger or a bren carrier).
The only issue is when you move the vehicle even an inch (which is especially problematic with the bren carrier when it engages the enemy) the infantry will be jogged out of place and lose their cover bonus which rather ruins this as a viable tactic.
Imo relic should change vehicles so they have a small aura of green cover surrounding them rather than them working as solid objects. This way it could open tactical options for players that use combined arms (especially with brits that are so cover reliant earlygame)
Pls make this a reality relic