Historical note: Kentucky's first governor, Isaac Shelby, appointed his son-in-law to his staff with the rank of colonel, as an unpaid bodyguard. Later governors commissioned colonels as protective guards, who wore dress uniforms and appeared at official functions. Aide-de-camp appointments were usually handed out as reward for political support. The Honorable Order of Kentucky Colonels, founded in 1932 as a charitable organization, was an outgrowth of this long-standing practice.
From the description of Appointments by the governor - Aides-de-camp appointments, 1875-1879. (Unknown). WorldCat record id: 122467304