sentences:  Ohio played a critical part in the Union war effort and was one of the leading contributors of manpower (including a crop of gifted generals to include Grant, Sherman, Sheridan, McPherson, Griffin,).As most of the existing militia units were incorporated into federalized volunteer regiments, the mission of local defense and order fell to organized units of those exempted from federal service, youths, middle aged men and a sprinkling of veterans who had completed their active duty enlistments.Numerous battalions were organized statewide that were for the first time titled "National Guard.