All companies were organized at the Cuyahoga County Fairgrounds on the comers of Kinsman and Hudson Streets in the city of Cleveland, otherwise known as Camp Taylor. Between the 22^nd and the 28^th of April 1861 the citizens of northeast Ohio volunteered their services at an astonishing rate. Remembering, at this point in time, that service commitments were for only three months.

The companies comprising the Seventh were:

Filed & Staff		Colonel Tyler
Company A	Cleveland Zouave Light Guards	Captain Creighton
Company B	Cleveland Zouave Cadets	Captain DeVillers
Company C	Oberlin Monroe Rifles	Captain Shurtleff
Company D	Painesville Union Guards	Captain Dyer
Company E	Huron, Huron Infantry	Captain Sprague
Company F	Franklin Mills (Kent), Franklin Rifles	Captain Morris
Company G	Ravenna, Tyler Guards	Captain Seymour
Company H	Warren, Company A	Captain Asper
Company I	Youngstown Union Guards	Captain Sterling
Company K	Cleveland National Guards	Captain Wiseman
Regimental Band		Harry Coe

On May 6^th, 1861 the Seventh would leave camp Taylor and travel to Cincinnati where they would train at Camp Dennison. On May 7^th the Seventh was ordered to elect officers, which they did. Eramus B. Tyler of Ravenna was elected Colonel over James A. Garfield. William R. Creighton was named Lt. Colonel and John Casement, of Painesville, as Major. The remainder of the officers were as follows:

Surgeon	Henry B. Cushing
Asst. Surgeon	Francis Salter
Chaplain	Rev. Frederick T. Brown
Adjutant	Louis G. DeForest
Quartermaster	John Morris
Sergeant Major	Leicester King
Quartermaster	Marcus S. Hopkins
Drum Major	John L. Woodward
Fife Major	Harry Wood