The following is a brief list of all the main wars and conflicts in the 19th Century after the end of the Napoleonic Wars…While the earlier ones were fought little differently to the Napoleonic Wars, from around 1850 or so onwards they steadily changed as modern technology intervened in the form of Rifled & Breech loading guns, improved artillery, machine-guns, railways, the telegraph, steam powered ships, armoured ships, early torpedoes, battleships with centralised rotating guns instead of broadsides, and so on… By the end of the century the new rifles, machine-guns, indirect quick-fire fire artillery, dreadnought battleships with rotating armoured gun turrets, early motor vehicles, and more were in use, or about to enter production, and would eventually be the mainstay of the armies involved in the First World War 14 years later…
- Greek War of Independence (1821-1831)
- November Uprising & Polish-Russian war (1830-1831)
- American Indian Wars in the West (1836-1890)
- First Anglo-Afghan War & First Opium War (1839-1842)
- First minor New Zealand Wars (1843-1847)
- First Anglo-Sikh War (1845-1846)
- Mexican-American War (1846–1848)
- First Italian War of Independence (1848–1849)
- Second Anglo-Sikh War (1848-1849)
- First Schleswig War (1848-1851)
- Taiping Rebellion (1851–64)
- Crimean War (1854–1856)
- Second Opium War (1856-1860)
- Indian Mutiny (1857–58)
- Austro-Sardinian War or Second Italian War of Independence (1859)
- Second major (Taranaki & Waikato) New Zealand Wars (1859-1864)
- American Civil War (1861-1865)
- Franco-Mexican War (1861–67)
- Polish uprising against Russia (1863–1865)
- Second Schleswig War (1864)
- Third Italian War of Independence (1866)
- Austro-Prussian (“Seven Weeks”) War (1866)
- Third & Last minor New Zealand Wars (1868-1872)
- Franco-Prussian War (1870–1871)
- Second Ashanti War (1873-1874)
- Bulgarian revolt against Turks (1876)
- Russo–Turkish War (1877–1878)
- Second Anglo-Afghan War (1878-1880)
- Anglo-Zulu War (1879)
- First Boer War (1880-1881)
- Mahdist uprising in Sudan (1881-1899)
- Serbo-Bulgarian War (1885)
- Wounded Knee Massacre: End of the American Old West Indian Wars (1890)
- First Moroccan Rif War (1893-1894)
- 1893 Cod War (1893–1896)
- First Italo–Ethiopian War (1895-1896)
- Anglo-Zanzibar War (1896)
- First Greco–Turkish (“Thirty Days”) War (1897)
- Anglo-Pathan War (1897-1898)
- Spanish-American War (1898)
- Boxer Rebellion (1898-1901)
- Second Boer War (1899-1902)
- Philippine-American War (1899-1913)