Trying to land with the gear down if one of the main struts has been destroyed or disabled is extremely dangerous. It's usually better to land on the belly of the aircraft.
Stukas had explosive cartridges installed at the root of each strut so that in the event that one of them was damaged or blown off during combat, the other could be blown clear of the aircraft so that a safer crash landing could be attempted.
I just thought it would be a neat feature to have included for this plane.