In English, Blitz certianly relates to/connotates Blitzkrieg. But I wouldn't call it a Nazi techinque. First, it was likely a mtyh or innaccurate description of German military doctrine. It was mostly popularized as a term by the English press.
But its werid to avoid terminology about german stuff invented during the time Nazi's controlled germany. You wouldn't call jet propulsion as Nazi invention.
But its werid to avoid terminology about german stuff invented during the time Nazi's controlled germany. You wouldn't call jet propulsion as Nazi invention.