Behold: the Royal Army's 1937 small arms training manual for the Webley revolver.
Note the emphasis on ambidextrous shooting, topping off your ammunition whenever possible, and dry fire practice for improved trigger control.
Contrast with the Russian Imperial Army's revolver technique.
Several early 20th century authorities say that only the US and British Empire took handgun fighting seriously back then. Of course, all those authorities were American and British, so I suppose a grain of salt may be called for.