Here's what I wrote in 5766 where Ravitz tells of his 4 meetings with the Lubavitcher Rebbe.
4 times no less! So said the man himself in radio interviews on Israeli radio
Listen Here (in Hebrew)
Highlights of the meetings include:
1) The Rebbe tells him to grow a beard, he says the beard does nothing for him, it doesn't add nor does it diminish his Yiras Shomayim.
2) The Rebbe asks him about learning Chassidus, he says "in Chevroner Yeshivah we learn Mussar".
3) Years later when he grew a beard he told the Rebbe: "it's not because you asked me to, but rather because in the Army they made us either shave every day or let it grow, so I let mine grow!
What I find fascinating is that a man like Ravitz later became one of Degel haTorah's major attack dogs, and Lubavitch wasn't spared either to put it mildly, so what happened to him? Did he sell his soul? I guess so.
ע"כ what we wrote 2+ years ago. Now we learn that Reb Avrohom passed away yesterday at the age of 74/75. He was a "doer" of many great things, including bringing many, many Jews closer to Yiddishkeit while working at Yad LeAchim and at Or Someach in Israel. According to Ravitz even his joining of LeCHi in 1948 as a youngster of 13/14 was also due to the British injustices that were happening in Palestine at the time, including the hanging of Lechi operatives and the closed door policy that they maintained despite the recent ending of World War II. In short he was out there on the front lines, helping Jews. Yet, as a Lubavitcher it's tough to think of him as some great Tzaddik, being that he was a member of the ill-fated Degel HaTorah for 20 years. I know he's not an attack dog like Lorencz is, but he still managed to upset lots of people. Yes, we know Lorencz wasn't around at the time of the split, but he managed to make his mark with his narishe, hateful, and outright false memoirs, and that accusation comes from Agudists, not Lubavitchers.