James Monroe
James Monroe became the 5th president and the first president after the War of 1812. War hero, Andrew Jackson was thinking about running, but Thomas Jefferson talked to him and convinced him to wait until after Monroe .
US Grant.
The civil war general president was Ulysses Grant. He served as the US commander and general of the Union armies. He later on became the 18th US president.
No war in the US. The Civil War ended about a week before Lincoln was killed and Johnson became President.
General Dwight D. Eisenhower became president after WWII and was president of the US until the 1960's.
Eisenhower
James Monroe, the Fifth US President was the Seventh Secretary of State and the Eigth Secretary of War.
No one. The US did not exist until almost a quarter-century after the French and Indian War. No US means no US President. However, George Washington who became the first US President served as a young American officer in the French and Indian War.
Ulysses Grant became famous from the Civil War and was later elected President for two terms.
Franklin Roosevelt was President of the United States when the war began, and remained president up until he died in 1945. Harry Truman then became president.
When he became President on April 12, 1945, he was then automatically US Commander in Chief.