See: US Civil War
General Douglas MacArthur
General George S Patton
William Sherman
General Philip Sheridan fought as a Union general in the American Civil War
Winfield Scott Hancock
Spanish American War
General Cornwallis was a prominent British military leader during the American Revolutionary War. He is best known for his role in several key battles, including the Siege of Yorktown in 1781, where his surrender to American and French forces effectively ended the war. Cornwallis's campaigns were instrumental in shaping the conflict between the American colonies and Great Britain.
General Nelon A. Miles.
General Grant was not associated with the Spanish American war
The American colonial war (also called by the rebels - i.e. traitors- as the American war of Independence)
Robert E. Lee was a Captain during the Mexican American War. Sterling Price became a Brigadier General after the Taos Revolt and was a General Officer of the Confederate States.
General Grant