World War I (1917 - 1918)
World War I (WWI or WW1), also known as the First World War or the Great War, was a global war centered in Europe that began on 28 July 1914 and lasted until 11 November 1918. More than 9 million combatants and 7 million civilians died as a result of the war, a casualty rate exacerbated by the belligerents' technological and industrial sophistication, and tactical stalemate. It was one of the deadliest conflicts in history, paving the way for major political changes, including revolutions in many of the nations involved.
The war drew in all the world's economic great powers, assembled in two opposing alliances: the Allies (based on the Triple Entente of the United Kingdom, France and the Russian Empire) and the Central Powers of Germany and Austria-Hungary. Although Italy had also been a member of the Triple Alliance alongside Germany and Austria-Hungary, it did not join the Central Powers, as Austria-Hungary had taken the offensive against the terms of the alliance. These alliances were reorganized and expanded as more nations entered the war: Italy, Japan and the United States joined the Allies, and the Ottoman Empire and Bulgaria the Central Powers. More than 70 million military personnel, including 60 million Europeans, were mobilized in one of the largest wars in history. The trigger for war was the 28 June 1914 assassination of Archduke Franz Ferdinand of Austria, heir to the throne of Austria-Hungary, by Yugoslav nationalist Gavrilo Princip in Sarajevo. This set off a diplomatic crisis when Austria-Hungary delivered an ultimatum to the Kingdom of Serbia, and entangled international alliances formed over the previous decades were invoked. Within weeks, the major powers were at war and the conflict soon spread around the world.
The war drew in all the world's economic great powers, assembled in two opposing alliances: the Allies (based on the Triple Entente of the United Kingdom, France and the Russian Empire) and the Central Powers of Germany and Austria-Hungary. Although Italy had also been a member of the Triple Alliance alongside Germany and Austria-Hungary, it did not join the Central Powers, as Austria-Hungary had taken the offensive against the terms of the alliance. These alliances were reorganized and expanded as more nations entered the war: Italy, Japan and the United States joined the Allies, and the Ottoman Empire and Bulgaria the Central Powers. More than 70 million military personnel, including 60 million Europeans, were mobilized in one of the largest wars in history. The trigger for war was the 28 June 1914 assassination of Archduke Franz Ferdinand of Austria, heir to the throne of Austria-Hungary, by Yugoslav nationalist Gavrilo Princip in Sarajevo. This set off a diplomatic crisis when Austria-Hungary delivered an ultimatum to the Kingdom of Serbia, and entangled international alliances formed over the previous decades were invoked. Within weeks, the major powers were at war and the conflict soon spread around the world.
World War II (1941 - 1945)
World War II (WWII or WW2), also known as the Second World War, was a global war that lasted from 1939 to 1945, though related conflicts began earlier. It involved the vast majority of the world's nations—including all of the great powers—eventually forming two opposing military alliances: the Allies and the Axis. It was the most widespread war in history, and directly involved more than 100 million people from over 30 countries. In a state of "total war", the major participants threw their entire economic, industrial, and scientific capabilities behind the war effort, erasing the distinction between civilian and military resources. Marked by mass deaths of civilians, including the Holocaust (in which approximately 11 million people were killed) and the strategic bombing of industrial and population centers (in which approximately one million were killed, and which included the atomic bombings of Hiroshima and Nagasaki), it resulted in an estimated 50 million to 85 million fatalities. These made World War II the deadliest conflict in human history.
Korean War (1950 - 1953)
The Korean War (in South Korean Hangul: 한국전쟁, Hanja: 韓國戰爭, Hanguk Jeonjaeng, "Korean War"; in North Korean Chosungul: 조국해방전쟁, Joguk Haebang Jeonjaeng, "Fatherland Liberation War"; 25 June 1950 – 27 July 1953) was a war between North and South Korea, in which a United Nations force led by the United States of America fought for the South, and China fought for the North, which was also assisted by the Soviet Union. The war arose from the division of Korea at the end of World War II and from the global tensions of the Cold War that developed immediately afterwards.
Korea was ruled by Japan from 1910 until the closing days of World War II. In August 1945, the Soviet Union declared war on Japan and—by agreement with the United States—occupied Korea north of the 38th parallel. U.S. forces subsequently occupied the south and Japan surrendered. By 1948, two separate governments had been set up. Both governments claimed to be the legitimate government of Korea, and neither side accepted the border as permanent. The conflict escalated into open warfare when North Korean forces—supported by the Soviet Union and China—invaded South Korea on 25 June 1950. On that day, the United Nations Security Council recognized this North Korean act as invasion and called for an immediate ceasefire. On 27 June, the Security Council adopted S/RES/83: Complaint of aggression upon the Republic of Korea and decided the formation and dispatch of the UN Forces in Korea. Twenty-one countries of the United Nations eventually contributed to the defense of South Korea, with the United States providing 88% of the UN's military personnel.
Korea was ruled by Japan from 1910 until the closing days of World War II. In August 1945, the Soviet Union declared war on Japan and—by agreement with the United States—occupied Korea north of the 38th parallel. U.S. forces subsequently occupied the south and Japan surrendered. By 1948, two separate governments had been set up. Both governments claimed to be the legitimate government of Korea, and neither side accepted the border as permanent. The conflict escalated into open warfare when North Korean forces—supported by the Soviet Union and China—invaded South Korea on 25 June 1950. On that day, the United Nations Security Council recognized this North Korean act as invasion and called for an immediate ceasefire. On 27 June, the Security Council adopted S/RES/83: Complaint of aggression upon the Republic of Korea and decided the formation and dispatch of the UN Forces in Korea. Twenty-one countries of the United Nations eventually contributed to the defense of South Korea, with the United States providing 88% of the UN's military personnel.
Vietnam War (1965 - 1975)
The Vietnam War (Vietnamese: Chiến tranh Việt Nam), also known as the Second Indochina War, and also known in Vietnam as Resistance War Against America (Vietnamese: Kháng chiến chống Mỹ) or simply the American War, was a Cold War-era proxy war that occurred in Vietnam, Laos, and Cambodia from 1 November 1955 to the fall of Saigon on 30 April 1975. This war followed the First Indochina War (1946–54) and was fought between North Vietnam—supported by the Soviet Union, China and other communist allies—and the government of South Vietnam—supported by the United States, Philippines and other anti-communist allies. The Viet Cong (also known as the National Liberation Front, or NLF), a South Vietnamese communist common front aided by the North, fought a guerrilla war against anti-communist forces in the region. The People's Army of Vietnam, also known as the North Vietnamese Army (NVA), engaged in a more conventional war, at times committing large units to battle.
As the war continued, the part of the Viet Cong in the fighting decreased as the role of the NVA grew. U.S. and South Vietnamese forces relied on air superiority and overwhelming firepower to conduct search and destroy operations, involving ground forces, artillery, and airstrikes. In the course of the war, the U.S. conducted a large-scale strategic bombing campaign against North Vietnam.
The U.S. government viewed its involvement in the war as a way to prevent a Communist takeover of South Vietnam. This was part of a wider containment policy, with the stated aim of stopping the spread of communism. The North Vietnamese government and the Viet Cong were fighting to reunify Vietnam under communist rule. They viewed the conflict as a colonial war, fought initially against forces from France and then America, and later against South Vietnam.
As the war continued, the part of the Viet Cong in the fighting decreased as the role of the NVA grew. U.S. and South Vietnamese forces relied on air superiority and overwhelming firepower to conduct search and destroy operations, involving ground forces, artillery, and airstrikes. In the course of the war, the U.S. conducted a large-scale strategic bombing campaign against North Vietnam.
The U.S. government viewed its involvement in the war as a way to prevent a Communist takeover of South Vietnam. This was part of a wider containment policy, with the stated aim of stopping the spread of communism. The North Vietnamese government and the Viet Cong were fighting to reunify Vietnam under communist rule. They viewed the conflict as a colonial war, fought initially against forces from France and then America, and later against South Vietnam.
Invasion of Panama (1989 - 1990)
The United States Invasion of Panama, code-named Operation Just Cause, was the invasion of Panama by the United States between mid-December 1989 and late-January 1990. It occurred during the administration of U.S. President George H. W. Bush, and ten years after the Torrijos–Carter Treaties were ratified to transfer control of the Panama Canal from the United States to Panama by 1 January 2000.
During the invasion, de facto Panamanian leader, general, and dictator Manuel Noriega was deposed, president-elect Guillermo Endara sworn into office, and the Panamanian Defense Force dissolved.
The United States long maintained numerous military bases and a substantial garrison throughout the Canal Zone to protect the American-owned Panama Canal and to maintain American control of this strategically important area. On 7 September 1977, President of the United States Jimmy Carter and the de facto leader of Panama, General Omar Torrijos, signed Torrijos–Carter Treaties, which set in motion the process of handing over the Panama Canal to Panamanian control by the year 2000. Although the canal was destined for Panamanian administration, the military bases remained and one condition of the transfer was that the canal would remain open for American shipping. The US had long-standing relations with General Noriega, who served as a US intelligence asset and paid informant of the Central Intelligence Agency from 1967, including the period when Bush was head of the CIA (1976–77).
During the invasion, de facto Panamanian leader, general, and dictator Manuel Noriega was deposed, president-elect Guillermo Endara sworn into office, and the Panamanian Defense Force dissolved.
The United States long maintained numerous military bases and a substantial garrison throughout the Canal Zone to protect the American-owned Panama Canal and to maintain American control of this strategically important area. On 7 September 1977, President of the United States Jimmy Carter and the de facto leader of Panama, General Omar Torrijos, signed Torrijos–Carter Treaties, which set in motion the process of handing over the Panama Canal to Panamanian control by the year 2000. Although the canal was destined for Panamanian administration, the military bases remained and one condition of the transfer was that the canal would remain open for American shipping. The US had long-standing relations with General Noriega, who served as a US intelligence asset and paid informant of the Central Intelligence Agency from 1967, including the period when Bush was head of the CIA (1976–77).
The War on Terror (2001 - Present)
The War on Terror (WoT), also known as the Global War on Terrorism (GWOT), refers to the international military campaign that started after the September 11 attacks on the United States. The United States led a coalition of other countries in a long but unsuccessful campaign to destroy al-Qaeda and other militant Islamist organizations.
U.S. President George W. Bush first used the term "War on Terror" on 20 September 2001. The Bush administration and the western media have since used the term to argue a global military, political, legal, and conceptual struggle against both organizations designated terrorist and regimes accused of supporting them. It was originally used with a particular focus on Muslim countries associated with Islamic terrorism organizations including al-Qaeda and like-minded organizations.
In 2013, President Barack Obama announced that the United States was no longer pursuing a War on Terror, as the military focus should be on specific enemies rather than a tactic. He stated, "We must define our effort not as a boundless 'Global War on Terror', but rather as a series of persistent, targeted efforts to dismantle specific networks of violent extremists that threaten America."
U.S. President George W. Bush first used the term "War on Terror" on 20 September 2001. The Bush administration and the western media have since used the term to argue a global military, political, legal, and conceptual struggle against both organizations designated terrorist and regimes accused of supporting them. It was originally used with a particular focus on Muslim countries associated with Islamic terrorism organizations including al-Qaeda and like-minded organizations.
In 2013, President Barack Obama announced that the United States was no longer pursuing a War on Terror, as the military focus should be on specific enemies rather than a tactic. He stated, "We must define our effort not as a boundless 'Global War on Terror', but rather as a series of persistent, targeted efforts to dismantle specific networks of violent extremists that threaten America."