For war benefits if referring to the benefits or abilities you gain by having a character in your boat or party. ie muddle, rumors etc
For my second question i am referring to the abbreviations on the stats screen that have the letter grades of each characters strength for certain rune types. i.e. su = sun?, fi=fire, wa=water, wi=wind, ea=earth, sh=shield….not sure of all fo them just wondering if they are listed anywhere.