Before 9/11:
Afghanistan
Yugoslavia
Before 98:
Libya
Panama
Iraq
Kuwait
Somalia
Bosnia
Iran
Sudan
Afghanistan
Before 88:
Korea
China
Guatemala
Indonesia
Cuba
Guatemala
Belgian Congo
Guatemala
Dominican Republic
Peru
Laos
Vietnam
Cambodia
Guatemala
Lebanon
Grenada
Libya
El Salvador
Nicaragua
Iran
Japan
Before Pearl Harbor:
Dominican Republic
Nicaragua
China
Mexico
Russia
Wow, that's a lot of bombs! Hope this helps.