Some time ago I posted the following:
Gordon Flowerdew, VC, and the Mystery of his Headstone
Flowerdew died of his wounds the day after the battle. His marker, maintained by the Commonwealth War Graves Commission, lists his rank as "captain". I am informed by a member of his family that he was promoted to captain by the Canadian Cavalry Brigade's commander, Brigadier Seely, on the day he died; although his military records refer to him as "lieutenant" throughout. At least one author has referred to Flowerdew being promoted the same day he died, but (so far) I am not aware of any documentation in that regard--except for the headstone itself.
It's interesting to speculate with hindsight what Brigadier-general Seely's motivation would have been in promoting his badly wounded subaltern. To make his convalescence easier to bear? To encourage other officers to follow Flowerdew's bold example at Moreuil Wood?
Perhaps Seely knew Flowerdew's days--no, hours--were numbered, and wished to give him some comfort. Some bit of solace for his large family, perhaps. Whatever the motivation, it speaks to Seely's concern for the Canadian cavalrymen, of whom he was so proud.