Wensleydale: What a spoilsport you are!! Now I can mention that the 2 officers could not have been using Webley Mk 6 .455" revolvers either - as they hadn't been invented then!!!
Not to mention that in the film there was only three months difference between the commission dates, when it was really more like three years. Also of note is the character of Private Hook, in the film a criminal drunkard - in reality a teetotal model soldier who ended up as a sergeant.