• Battles of the Trans-Mississippi Theater of the American Civil War‎ (5 C, 137 P)
• Campaigns of the Trans-Mississippi Theater of the American Civil War‎ (17 C, 7 P)
• Battlefields of the Trans-Mississippi Theater of the American Civil War‎ (1 C, 15 P)

C

• Colorado in the American Civil War‎ (2 C, 6 P)

I

• Idaho in the American Civil War‎ (2 C, 13 P)
• Indian Territory in the American Civil War‎ (4 C, 27 P)

K

• Kansas in the American Civil War‎ (4 C, 26 P)

M

• Missouri in the American Civil War‎ (6 C, 66 P)
• Montana in the American Civil War‎ (1 C, 3 P)

N

• Nebraska in the American Civil War‎ (3 C, 2 P)
• New Mexico in the American Civil War‎ (4 C, 11 P)
• North Dakota in the American Civil War‎ (3 C, 4 P)

S

• American Civil War shipwrecks in the Mississippi River‎ (6 P)
• South Dakota in the American Civil War‎ (4 P)

T

• Trans-Mississippi Department‎ (1 C, 9 P)

U

• Utah in the American Civil War‎ (1 C, 7 P)

W

• Wyoming in the American Civil War‎ (1 P)

• Trans-Mississippi theater of the American Civil War

A

• Confederate Arizona
• Arkansas in the American Civil War
• Army of the Trans-Mississippi
• Army of the West (1862)
• Army of Western Louisiana

B

• Battle of Acton

L

• Louisiana in the American Civil War

M

• Confederate government of Missouri

T

• Texas in the American Civil War
• Capture of Tucson (1862)