- John Bull (Symbolic character)1
- Liberty cap1
- Long Island, Battle of, New York, N.Y., 17761
- Loss of consciousness1
- Mascots1
- Medicines1
- Mexican War, 1846-184812
- Military campaigns6
- Military camps1
- Military chaplains1
- Military life1
- Military officers2
- Military uniforms1
- Monkeys1
- Monterrey, Battle of, Monterrey, Mexico, 18461
- Musical instruments1
- Napoleonic Wars, 1800-181511
- Naval warfare2
- Neerwinden, Battle of, Neerwinden, Belgium, 17931
- Palo Alto, Battle of, Tex., 18461