I've just looked it up, the battle of Quatre Bras was 1815, so he served for just short of 2 years before being injured 2 days before the battle of Waterloo.
That means he was promoted a month after he was disabled, But I would think there is a good chance his promotion was promulagted before then, if not they were being unusually generous for the military!!
Last edited by The Q; 21st March 17 at 01:46 AM.
"We make a living by what we get, but we make a life by what we give"
Sir Winston Leonard Spencer-Churchill