Complex sentence: In another incident a German Fennek was hit by a rocket-propelled grenade, whose hollow charge jet penetrated the vehicle through the right frontal wheel rim, passed through the vehicle and blew the left door off the hinge.
Split into simpler sentences: In another incident a German Fennek was hit by a rocket-propelled grenade. Its hollow charge jet penetrated the vehicle through the right frontal wheel rim, passed through the vehicle and blew the left door off the hinge.