This is a photo from my latest mission. Here you can see an example of Superficial Damage. Five hits were superficial damage; 1st in the wing, 2nd in the nose, 3rd & 4th in the armorer's station, 5th in the right engine. The fifth counts as visible external damage and would make enemy fighter pilots come around for successive attacks. You can see here that I have many hits which are visible to the bandits, nfact all of these are visible.
Why the top turret? Well, because I had to jettison all equipment, guns and ammo, because of the dead engine, so a pilot can see that there are no guns in the turret. (There is no rule for this, I improvised.)
The aileron does not move and is shredded, the flap too, but I might change that so only a flap down is visible external damage.
The bandit can see serious damage to the right wing root. On the left wing root is an example of a larger counter with color coding.
My Armorer (tail) and Engineer (Top) are aces so I have put a counter to mark their skill.