On July 1, 1861, Nelson was detached from the Navy with instructions to organize a force of 10,000 troops for an expedition into East Tennessee. Two weeks later, Nelson spoke with Union leaders from southeastern Kentucky at Lancaster and Crab Orchard. The latter town was conveniently located at the south end of the turnpike in Garrard County and was at the head of the Wilderness Road, 65 mi north of the Cumberland Gap at the old inn at Bryant Springs, the first headquarters, and it was agreed the leaders would raise thirty companies of infantry and five of cavalry. Thomas E. Bramlette had one company in camp on July 20 and another on July 24, 1861. Some seven miles north of Lancaster and twelve miles from the rail depot at Nicholasville, Jessamine County, Richard M. Robinson offered to lease 425 acres of first-class rolling pastureland at Hoskins Crossroads. Nelson considered that to be as a much better site for a camp of instruction, and the new recruits were marched into Camp Dick Robinson, in violation of Kentucky's somewhat duplicitous position of neutrality.