William Augustus Simpson,
1911 Encyclopædia Britannica, Volume 20…
(1911)
“ Colonel.—This rank exists in its primitive significance in every army. It denotes a regimental commander, or an officer of corresponding status on the staff. In Great Britain, with the “linked battalion” system, regiments of infantry do not work as units, and the executive command of battalions, regiments of cavalry and brigades of field artillery is in the hands of lieutenant-colonels. Colonels of British regiments who are quasi-honorary (though no longer proprietary) chiefs are royal personages or general officers. ”
