The rules say that an infantryman has to win an in-sight test against the target tank in order to attack it in close combat, but what happens if the infantryman loses the in-sight test?
Just resolve a normal In Sight with the Tank winning. Page 9 in the QRS in the back. Will open fire with MGs if it has the infantry in sight, even if it has to turn the turret to do so. If can't fire or turn turret then can move, turning to see the infantry if it wants and another In Sight is taken.