Armor Mastery (Medium) (General, Fighter)
You live in your armor all the time and can overcome its bulk.
Base attack +4, Armor Proficiency (light and medium)
When in medium armor and with light encumbrance, you only suffer the restrictions associated with light armor. This lets you move at full speed, use Evasion, Tumble, sleep in armor and other similar tasks while in medium armor.
This is a fighter bonus feat. A ranger with armor mastery for the type of armor worn can use his combat style.