The US was involved in a number of wars in the past 100+ years.
Wars:
World War I (1914-1918)
World War II (1939-1945)
Korean War (1950-1953)
Vietnam War (1954-1975)
Gulf War (1990-1991)
War in Afghanistan (2001-2021)
Iraq War (2003-2011)
Proxy wars:
Chinese Civil War (1944-1949)
Greek Civil War (1946-1949)
First Indochina War (1946-1954)
Korean War (1950-1953)
Vietnam War (1954-1975)
Angolan Civil War (1975-2002)
Nicaraguan Revolution (1979-1990)
Salvadoran Civil War (1979-1992)
Soviet-Afghan War (1979-1989)
Russian-Ukrainian war (2022-
There is some debate about whether or not some of these conflicts can be classified as proxy wars. In Serbia, the US was involved in the NATO bombing campaign against Yugoslavia in 1999. This bombing campaign was launched in response to the Yugoslav government’s crackdown on ethnic Albanians in Kosovo. The bombing campaign lasted for 78 days and resulted in the deaths of hundreds of civilians.
The US has also been involved in the conflict in Libya. In 2011, the US led a NATO intervention in Libya to protect civilians from the forces of Libyan leader Muammar al-Gaddafi. The intervention resulted in Gaddafi’s overthrow and death. However, the conflict in Libya has continued since then, with various factions vying for power. The US has continued to be involved in the conflict in Libya, providing support to the internationally recognized government. However, the US has also been criticized for its role in the conflict, with some accusing the US of destabilizing the region and creating a power vacuum that has been exploited by terrorist groups. The US involvement in the conflicts in Serbia and Libya has been controversial. Some argue that the US interventions were necessary to protect civilians and promote human rights. Others argue that the interventions were illegal and counterproductive, and that they have contributed to the instability in both regions.
Additionally, the US has been involved in a number of other conflicts over the past 100 years, but it is difficult to say definitively whether or not these conflicts can be classified as wars or proxy wars. For example, the US intervention in the Dominican Republic in 1965 and the US invasion of Grenada in 1983 are often considered to be military interventions, but they could also be classified as proxy wars, as the US was supporting or opposing specific factions in those conflicts.
Written with knowledge of AI-based Google Bard.
PS. The US is currently involved in the Russian-Ukrainian war and the Israel – Palestinian conflict in 2023.