How many wars that US has involved since 1904?

1. WW1 (1917-1918) 2. WW2 (1941-1945) 3. Korean War (1950-1953) 4. Vietnam War (1961-1975) 5. Operation Urgent Fury-Grenada (1983) 6. Operation Just Cause-Panama (1989) 7. Operation Desert Storm-Iraq (January and Febuary 1991) 8. Operation Restore Hope-Somalia (1993) 9. Operations in Europe-Bosnia (1990's) 10. Operation Enduring Freedom-Afghanistan (2001-Present) 11. Operation Iraqi Freedom-Iraq (2003-Present)