How do certain skill books effect in-city troops when using as a Main City Defense General?
Specifically, Jadwiga’s main skill book gives and increase to “in-city troops”, however Ivan IV main skill book gives an increase to troops when “leading the army”.

Do the phrases “in-city troops” and “when leading the army” impact whether the skill book works for Troops within the city the same when the general is assigned as Main City Defense General?