This Timeline of the British Army 1800–1899 lists the conflicts and wars the British Army were involved in.

French Revolutionary Wars ended 1802 Second Anglo-Maratha War 1803–1805 Napoleonic Wars 1802–1813 War of 1812 1812–1815 Hundred Days 1815 (The return of Napoleon Bonaparte) Anglo-Nepalese War 1813–1816 Third Anglo-Maratha War 1817–1818 5th Frontier War 1818 First Ashanti War 1823–1831 First Anglo-Burmese War 1824–1826 First Anglo-Afghan War 1839–1842 First Opium War 1839–1842 First Anglo-Sikh War 1845–1846 New Zealand Wars 1845–1872 Second Anglo-Sikh War 1848–1849 Second Anglo-Burmese War 1852–1853 Crimean War 1853–1856 Anglo-Persian War 1856–1857 Second Opium War 1856–1860 Indian Rebellion 1857–1858 Second Ashanti War 1863–1864 Bhutan War 1864–1865 Third Ashanti War 1873–1874 Second Anglo-Afghan War 1878–1880 Anglo-Zulu War 1879 First Boer War 1880–1881 Third Anglo-Burmese War 1885 Mahdist War 1881–1899 Fourth Ashanti War 1894 Anglo-Zanzibar War 1896 (The shortest war in recorded history, which only lasted approximately 38 minutes) Six-Day War 1899 Boxer Rebellion 1899–1901 Second Boer War 1899–1902

See also Timeline of the British Army Timeline of the British Army 1700–1799 Timeline of the British Army 1900–1999 Timeline of the British Army since 2000

References