Complex sentence: This region was largely pro-Union and his militia was not highly motivated, so Wise condemned Beckley's unit in August 1861 it only served until October 1861, contributing little to the Confederate cause.
Split into simpler sentences: This region was largely pro-Union and his militia was not highly motivated, so Wise condemned Beckley's unit in August 1861. Thus, it only served until October 1861, contributing little to the Confederate cause.