The hero in a kilt who tackled a Panzer division on his own! (and then accepted the surrender of 23,

The undercover British officer crept silently through the bushes, his tartan kilt a bizarre form of dress for a man who did not want to be conspicuous.

Then he stopped to take in the awesome might of the enemy. Through the gloom, he could make out the 15,000 battle-scarred men and 200 machines of the cruellest and most feared of all the SS forces in war-torn France in the summer of 1944.
The hero in a kilt who tackled a Panzer division on his own! (and then accepted the surrender of 23,000 German soldiers) | Mail Online

 

So was it air power or partisans that halted Das Reich?

 

neither nor. There were just too many allies.