"It is not surprising, however, that American generals found the British system irksome, especially as applied by Montgomery. To them his methods were the more objectionable because he was so clearly born to command and, even in his most tactful moments, he exercised his authority almost as a matter of right. Moreover, he was not as other men. He shunned the company of women; he did not smoke or drink or play poker with 'the boys.' He could never be 'slapped on the back.' Because he lived in a small tactical H.Q. with a few aides and liaison officers, he was looked upon as setting himself apart from (and therefore above) his fellow soldiers. This impression seemed to be confirmed by his practice, resented as much by other British services as it was by the Americans, of sending his Chief of Staff, de Guingand, to represent him at conferences."
January 1, 1970
https://en.wikiquote.org/wiki/Bernard_Montgomery%2C_1st_Viscount_Montgomery_of_Alamein