Hi Michael, my huge regards of the FJ's had always been as valiant defenders, rather than daredevil assault troops, though history recorded that they excelled at both.
Some time ago, i read a lot of Time/Life excellent book sets (26 books?) History of the Third Reich and the FJ's feat at cassino really impressed me.
1 most outstanding feat for me, if remembered correctly, reading about was that a group of around 37 FJ's with several cooks were impromptu forced to defend a bridge against an allied infantry thrust.
They defended it so fanatically that the Allies thought they were facing a large number of enemy.
after around 5 hours, when the bridge was finally taken, the Allies knew the truth, and were so impressed by the feat that they shook the hand of the FJ survivors.
The FJs too fought a slow brilliant withdrawal in Italy, slowing the Allied advance that the Italian Front stabilized, and the some Allies dubbed the FJ commander, Albert Kesselring - the "wonder weapon".