Boarman's regiment, the 1st Louisiana Infantry,[3] became part of the Army of Northern Virginia. After one year of fighting, Boarman was promoted to the rank of captain in the Confederate States Army, which he held until 1865. He served as the acting assistant Adjutant-General in the Battle of Winchester. His commanding office wrote of the engagement:
I would call particular attention to Capt. Alexander Boarman, acting assistant adjutant-general, and Lieut. Joseph Taylor, acting aide-de-camp, who behaved with much courage, gallantry, and efficiency, and greatly assisted me in the engagement.[4]
Following his departure from Congress, Boarman resumed private practice in Shreveport from 1873 to 1877.[1] He was a Judge of the Louisiana District Court for the Tenth Judicial District from 1877 to 1881.[1]
His service terminated on August 30, 1916, due to his death while on a visit in Loon Lake, Franklin County, New York.[1] He was interred in Oakland Cemetery in Shreveport.[2]
Louisiana State Bar Association, Mississippi State Bar Association, Bar Association of Arkansas, Texas Bar Association; "Report of the Louisiana State Bar Association, Volume 18", The Association, (1918)
Thompson, E.; "Law Notes, Volume 20", E. Thompson Co., (1917)
Judicial Conference of the United States. Bicentennial Committee; "Judges of the United States", The Conference, for sale by the U.S. G.P.O, (1983)