Shoot one of the other remaining Soviets behind the tank
From Create Your Own Story
You put another Soviet in your cross-hairs, one of the surviving infantrymen. You fire, and the man you hit tenses up, his finger pulling against the trigger of his assault rifle. He spins and falls back, screaming and swinging his still-firing weapon around wildly. By the time he hit the dirt, dead and silent, he'd accidentally killed one of his comrades.
By this time, your allies have killed most of the enemy, and there were only three Soviets left alive.
Next target;