THE CIVIL WAR, 1861

AMERICAN MILITARY HISTORY
ARMY HISTORICAL SERIES
OFFICE OF THE CHIEF OF MILITARY HISTORY

UNITED STATES ARMY

To provide his fledgling government with a military force, on March 6 the new Confederate Executive, Jefferson Davis, called for a 100,000-man volunteer force to serve for twelve months.

The creation of a rival War Department south of the 35th Parallel on February 21 shattered the composition of the Regular Army and disrupted its activities, particularly in Texas, where Maj. Gen. David E. Twiggs surrendered his entire command. With an actual strength of 1,080 officers and 14,926 enlisted men on June 30, 1860, the Regular Army was based on five-year enlistments.

https://www.history.army.mil/html/bookshelves/resmat/civil_war/extracts/the_civil_war_1861_(pg_199-221).pdf