I find I am a bit confused by the differences in "Blood Money" for wounds, rewards, such as the examples you gave for Charles Napier, and simple pensions.
Charles Napier, for instance, is listed in the "Return of the Names of the Officers in the Army" by the Naval & Military Press as having received a pension of 300 pounds per annum beginning in 1811. It lists both Busaco and Corunna as the places where he was wounded. The ammount seems to be typical for commanding majors [when wounded].
Does this mean that Charlie was getting THREE separate benefits from his wounds: blood money, special jobs, AND a pension?