Statistics for occurrence #1 of “U. S. A.” in chapter 15 of Elias Nason, McClellan's Own Story: the war for the union, the soldiers who fought it, the civilians who directed it, and his relations to them.:

...es by battle and disease, was issued the order putting a complete stop to the recruiting, service for the volunteers and breaking up all the recruiting stations: adjutant-general's office, U. S. A. , Washington, April 3, 1862. III. The recruiting service for volunteers will be discontinued in every State from this date. The officers detached on the Volunteer Recruiting Service will join ...
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