Breaking the leading sectors of the Stalin Line disorganized the Soviet defense. Unfortunately, they also allowed them to shorten the supply line and at this moment we have to break much deeper internal lines of defense.
Your enemy will be terrain - definitely not conducive to mobile offensive. Forests, marshes, rivers ... and so over and over.
If you were wondering why you had not met the tanks before, then here is the answer. Most likely, the Soviets were counting on the fact that these first sectors would collapse and that all armored weapons would stay deeper within the basic ring of defense.
