The Time line 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 1802–1805
Napoleonic Wars 1802–1813
War of 1812 1812
Hundred Days 1815 The return of Napoleon
Gurkha War 1813–1816
Third Anglo-Maratha War 1817–1818
First Ashanti War 1823–1831
First Anglo-Burmese War 1824–1826
First Anglo-Afghan War 1839–1842
First Opium War 1839–1842
First Anglo Marri War 1840
First Anglo-Sikh War 1845–1846
Second Anglo-Burmese War 1852–1853
Crimean War 1853–1856
Anglo-Persian War 1856–1857
Second Opium War 1856–1860
Indian Rebellion 1857
New Zealand land wars 1845–1872
Second Anglo-Sikh War 1848–1849
Second Ashanti War 1863–1864
Bhutan War 1864–1865
Third Ashanti War 1873–1874
Second Anglo-Afghan War 1878–1880
Anglo-Zulu War 1879
Second Anglo Marri War 1880
First Boer War 1880–1881
Third Anglo-Burmese War 1885
Mahdist War 1891–1899
Fourth Ashanti War 1894
Anglo-Zanzibar War 1896 Shortest war in history lasted 38 minutes
Boxer Rebellion 1899–1901
Second Boer War 1899–1902
