Beadle was born in a
log cabin in
Parke County, Indiana, and grew up on the frontier.
John Hanson Beadle was his younger brother. Shortly after graduation, Beadle enlisted in the
Union Army and was commissioned as a
first lieutenant in the
31st Indiana Infantry on September 5, 1861. He was promoted to
captain on November 9, 1861, and served with his unit until February 9, 1862, when he was sent to
Jackson, Michigan to help train the new
26th Michigan Infantry Regiment and then to recruit for the new
1st Michigan Sharpshooters Regiment. Beadle was promoted to lieutenant colonel of that regiment on January 1, 1863, and served with them until June 13, 1864. He then became a major in the
Veteran Reserve Corps assigned to the
southern defenses of Washington, D.C. in northern Virginia. Beadle briefly commanded a brigade and was
brevetted lieutenant colonel on December 13, 1864. He later commanded the Military Guard for the District of Columbia during
Lincoln's second inaugural on March 4, 1865. Beadle was brevetted colonel and brigadier general on March 13, 1865, and released from active duty on March 16, 1866. After the war, Beadle received an
LLB from the University of Michigan Law Department in March 1867. == Career ==