Question: When did the famous leader of the Confederate Military end his fight in the Mexican-American war?

Knowledge 1: Military leadership in the American Civil War
Jefferson Davis was named provisional president on February 9, 1861, and assumed similar commander - in - chief responsibilities as would Lincoln; on November 6, 1861 Davis was elected President of the Confederate States of America under the Confederate Constitution. Alexander H. Stephens was appointed as Vice President of the Confederate States of America on February 18, 1861, and later assumed identical vice presidential responsibilities as Hannibal Hamlin did. Several men served the Confederacy as Secretary of War, including Leroy Pope Walker, Judah P. Benjamin, George W. Randolph, James Seddon, and John C. Breckinridge. Stephen Mallory was Confederate Secretary of the Navy throughout the conflict. [SEP] Knowledge 2: Jefferson Davis
Davis was born in Fairview, Kentucky, to a moderately prosperous farmer, the youngest of ten children. He grew up in Wilkinson County, Mississippi, and also lived in Louisiana. His eldest brother Joseph Emory Davis secured the younger Davis's appointment to the United States Military Academy. After graduating, Jefferson Davis served six years as a lieutenant in the United States Army. He fought in the Mexican–American War (1846–1848), as the colonel of a volunteer regiment. Before the American Civil War, he operated a large cotton plantation in Mississippi, which his brother Joseph gave him, and owned as many as 113 slaves. Although Davis argued against secession in 1858, he believed that states had an unquestionable right to leave the Union.
Knowledge 1: Military leadership in the American Civil War
Jefferson Davis was named provisional president on February 9, 1861, and assumed similar commander - in - chief responsibilities as would Lincoln; on November 6, 1861 Davis was elected President of the Confederate States of America under the Confederate Constitution. Alexander H. Stephens was appointed as Vice President of the Confederate States of America on February 18, 1861, and later assumed identical vice presidential responsibilities as Hannibal Hamlin did. Several men served the Confederacy as Secretary of War, including Leroy Pope Walker, Judah P. Benjamin, George W. Randolph, James Seddon, and John C. Breckinridge. Stephen Mallory was Confederate Secretary of the Navy throughout the conflict. [SEP] Knowledge 2: Confederate States Army
The Confederate States Army (C.S.A.) was the military land force of the Confederate States of America (Confederacy) during the American Civil War (1861 - 1865). On February 28, 1861, the Provisional Confederate Congress established a provisional volunteer army and gave control over military operations and authority for mustering state forces and volunteers to the newly chosen Confederate president, Jefferson Davis (1808 - 1889). Davis was a graduate of the U.S. Military Academy on the Hudson River at West Point, New York, and colonel of a volunteer regiment during the Mexican -- American War (1846 - 1848). He had also been a United States Senator from Mississippi and U.S. Secretary of War in the administration of 14th President Franklin Pierce (1853 - 1857). On March 1, 1861, Davis assumed control of the military situation at Charleston, South Carolina on behalf of the Confederate States government, where South Carolina state militia threatened to seize Fort Sumter, an island fortification in Charleston harbor from the small U.S. Army garrison. By March 1861, the Provisional Confederate Congress expanded the provisional forces and established a more permanent Confederate States Army.
Knowledge 1: Military leadership in the American Civil War
Jefferson Davis was named provisional president on February 9, 1861, and assumed similar commander - in - chief responsibilities as would Lincoln; on November 6, 1861 Davis was elected President of the Confederate States of America under the Confederate Constitution. Alexander H. Stephens was appointed as Vice President of the Confederate States of America on February 18, 1861, and later assumed identical vice presidential responsibilities as Hannibal Hamlin did. Several men served the Confederacy as Secretary of War, including Leroy Pope Walker, Judah P. Benjamin, George W. Randolph, James Seddon, and John C. Breckinridge. Stephen Mallory was Confederate Secretary of the Navy throughout the conflict. [SEP] Knowledge 2: Confederate States Army
The Confederate States Army (C.S.A.) was the military ground force of the Confederate States of America (Confederacy) during the American Civil War (1861 - 1865). On February 28, 1861, the Provisional Confederate Congress established a provisional volunteer army and gave control over military operations and authority for mustering state forces and volunteers to the newly chosen Confederate president, Jefferson Davis (1808 - 1889), a graduate of the U.S. Military Academy on the Hudson River at West Point, New York, and colonel of a volunteer regiment during the Mexican -- American War (1846 - 1848), later a United States Senator from Mississippi and U.S. Secretary of War in the administration of 14th President Franklin Pierce (1853 - 1857). By March 1861, the Provisional Confederate Congress expanded the provisional forces and established a more permanent Confederate States Army.

Answer: 1848