Undoubtedly:it is understood, however, that others (such as Pennefather) had some input... A joke which does the rounds at Horse Guards is that the Duke's secretary has clearly removed most of the profanity and bad language.
'General Pennefather, who commanded at Aldershot in my time, literally “swore himself” into office. On one occasion, when the Queen was on the ground, he wished every regiment so vehemently to the “bottom of the bottomless pit” that it frightened the gracious lady, who sent an equerry to remind him of her presence. The monition had the desired effect for ten minutes, when the bombardment commenced afresh, and brought the field-day to an abrupt termination. The Queen had bolted in sheer trepidation of an earthquake.'
'Gazing one afternoon on the placid features of the “Royal George” before the new War Office, the occasion on which he once visited a station not 100 miles from London and told the colonel and officers generally that he didn’t believe a word they said, and stamped and fumed and swore and threatened, came vividly to my mind. There had been a fracas in the canteen during the officers’ mess hour, which eventually developed into a riot, and then was quelled. No one in the mess-house appears to have heard it, and it was only next morning that the matter, after investigation, was reported to the Horse Guards. The “Royal George,” who was distinctly apoplectic, ran many such chances of combustion in his younger days, for the old warrior was by no means mealy-mouthed and was not above playing to the gallery, as represented by the Press, and although he could never aspire to rank with General Pennefather, he could, when circumstances demanded, swear like any trooper.' (from London in the Sixties, by 'One of the Old Brigade'- AKA Donald Shaw, 86th Foot 1860-1876)