The 148th Infantry Regiment is an Ohio Army National Guard parent regiment under the U.S. Army Regimental System, with headquarters at Walbridge, Ohio. It currently consists of the 1st Battalion, 148th Infantry Regiment, an infantry battalion of the 37th Infantry Brigade Combat Team located throughout northwest Ohio.

The Ohio Army National Guard is a part of the Ohio National Guard and the Army National Guard of the United States Army. It is also a component of the organized militia of the state of Ohio, which also includes the Ohio Naval Militia, the Ohio Military Reserve and the Ohio Air National Guard. The Ohio Army National Guard consists of a variety of combat, combat support, and combat service support units. As of September 2010, its end strength exceeded 11,400 soldiers. Its headquarters is the Beightler Armory in Columbus, Ohio. Many units conduct Annual Training at Camp Grayling, Michigan.