[4] Lochée owned and occupied property in Chelsea from 1770 until his death,[5] establishing there by 1773 what he called the Royal Military Academy, for the training of infantry and cavalry officers, of which he was Master.
At a time when most British army officers were trained privately, if at all, Lochée‘s academy taught its students "the Modern Languages and all the Military Sciences.
[9] On 1 March 1790, in The Times, Lochée announced that he had retired and closed his military academy in Chelsea and was selling various effects, including carriages and library bookcases.
[10] After winding up his academy, Lochée fought as an officer in the military campaign of the United Belgian States to free Brabant from Austrian control.
[13] Shortly afterwards, he died at Lille: his death was recorded in The Gentleman's Magazine of June 1791: "At Lisle, in Flanders, Lewis Lochee esq.