Union Army
- Generals
- General (4-star)
- Lieutenant General (3-star)
- Major General (2-star)
- Brigadier General (1-star)
- Field Officers
- Colonel
- Lieutenant Colonel
- Major
- Company Grade Officers
- Captain
- First Lieutenant
- Second Lieutenant
- Enlisted Men
- First Sergeant
- Sergeant
- Corporal
- Private
Confederate Army
- Generals
- General (4-star)
- Full General (3-star)
- Lieutenant General (3-star)
- Major General (2-star)
- Brigadier General (1-star)
- Field Officers
- Colonel
- Lieutenant Colonel
- Major
- Company Grade Officers
- Captain
- First Lieutenant
- Second Lieutenant
- Enlisted Men
- First Sergeant
- Sergeant
- Corporal
- Private
Notes:
- The rank of General of the Armies was created for Ulysses S. Grant in 1864, making him the highest-ranking officer in the Union Army.
- The rank of General was the highest rank in the Confederate Army, and was held by Robert E. Lee.
- The rank of Full General was created for Confederate generals who were considered to be equal in rank to Union major generals.
- The rank of Brigadier General was the lowest general officer rank in both armies.
- The rank of First Sergeant was the highest non-commissioned officer rank in both armies.