War is an intense armed conflict between states, governments, societies, or paramilitary groups such as mercenaries, insurgents, and militias. It is generally characterized by extreme violence, aggression, destruction, and mortality, using regular or irregular military forces. The twentieth century suffered from several deadly wars. Take a look at some of the most deadly wars in the twentieth century.
The First Sino-Japanese War, also known as the Chino-Japanese War, was fought between China and Japa...
The Second Boer War (11 October 1899 – 31 May 1902) was fought between the British Empire and two Bo...
The Hungarian–Romanian War was fought between the First Hungarian Republic (as the Hungarian Soviet ...
The Irish War of Independence or Anglo-Irish War was a guerrilla war fought in Ireland from 1919 to ...
The Chinese Civil War was a civil war in China fought between the Kuomintang (KMT)-led government of...
The Spanish Civil War was a civil war in Spain fought from 1936 to 1939. Republicans loyal to the le...
The Second Sino-Japanese War was a military conflict fought primarily between the Republic of China ...
The First Indochina War (generally known as the Indochina War in France, and as the Anti-French Resi...
The Korean War (25 June 1950 – 27 July 1953) was a war between North Korea (with the support of Chin...
The First Sudanese Civil War (also known as the Anyanya Rebellion or Anyanya I, after the name of th...
The Vietnam War , also known as the Second Indochina War, and in Vietnam as the Resistance War Again...
The Bay of Pigs Invasion was a failed military invasion of Cuba undertaken by the Central Intelligen...
The Iran–Iraq War began on 22 September 1980, when Iraq invaded Iran, and ended on 20 August 1988, w...
The Falklands War was a 10-week undeclared war between Argentina and the United Kingdom in 1982 over...
The United States Invasion of Panama, codenamed Operation Just Cause occurred between mid-December 1...
The Gulf War (2 August 1990 – 28 February 1991), codenamed Operation Desert Shield (2 August 1990 – ...
The Bosnian War was an international armed conflict that took place in Bosnia and Herzegovina betwee...
The First Chechen War, also known as the First Chechen Сampaign, First Russian-Chechen war, or offic...
The Kosovo War was an armed conflict in Kosovo that started in late February 1998 and lasted until 1...
Second Chechen War, also known as the Second Chechen Сampaign or officially Counter-terrorist operat...