- French and Indian - pre US, but involving people who became US citizens and future US soil .
- Revolutionary War- gained independence from Britain.
- War of !812 - against Britain
- Mexican War
- Civil War
- Spanish American War- short conflict with Spain
- World War I
- World War II
- Korean War ( undeclared)
- Vietnam War ( undeclared)
- Desert Storm or Gulf War I (undeclared) versus Iraq to free Kuwait.
- Iraq-Afghanistan (undeclared)
- several Indian Wars
- Numerous short-lived military actions, mostly in Central and South America.