The First School War (French: Première guerre scolaire, Dutch: Eerste schoolstrijd) was a political crisis in Belgium over the issue of religion in education...

The First Opium War (Chinese: 第一次鴉片戰爭; pinyin: Dìyīcì yāpiàn zhànzhēng), also known as the Anglo-Chinese War, was a series of military engagements fought...

The First Chechen War, also referred to as the First Russo-Chechen War, was a struggle for independence waged by the Chechen Republic of Ichkeria against...

The First Punic War (264–241 BC) was the first of three wars fought between Rome and Carthage, the two main powers of the western Mediterranean in the...

The First Peloponnesian War (460–445 BC) was fought between Sparta as the leaders of the Peloponnesian League and Sparta's other allies, most notably...

The First Barbary War (1801–1805), also known as the Tripolitan War and the Barbary Coast War, was a conflict during the Barbary Wars, in which the United...

The First Nagorno-Karabakh War was an ethnic and territorial conflict that took place from February 1988 to May 1994, in the enclave of Nagorno-Karabakh...

The First Carlist War was a civil war in Spain from 1833 to 1840, the first of three Carlist Wars. It was fought between two factions over the succession...

The First Sino-Japanese War (25 July 1894 – 17 April 1895) or the First China–Japan War was a conflict between the Qing dynasty and the Empire of Japan...

The First Anglo-Afghan War (Pashto: ده انګريز افغان اولني جګړه) was fought between the British Empire and the Emirate of Kabul from 1838 to 1842. The British...