Ohio Military Reserve
The Ohio Military Reserve (OHMR) supplements the military forces of the Ohio Army and Air National Guard in times of natural disaster and state and national emergencies.
The Ohio Military Reserve serves under the Governor as Commander in Chief through the office of the Adjutant General and is headquartered at Rickenbacker ANG near Columbus, OH. In order to accomplish this primary mission to aid civil authorities most OHMR units are trained and organized as Military Police. There are also Medical, JAG, and Chaplain detachments.
The OHMR is divided into multiple brigades that cover the entire geography of the state of Ohio.
The OHMR is categorized as a "state defense force" which occupy the third tier of the Total Force Concept along with the service auxiliaries. (The other two tiers are the active armed services and the National Guard/Reserves.) About half the states have such organizations and all the states are authorized to form them.
The OHMR has a "sister service", the Ohio Naval Militia which operates out of Camp Perry, located near Port Clinton, OH.