In preparation for most ordinary combat military operations, armed forces are given a series of objectives that may include one or more primary targets.
During World War II, prior to October 1940, the Royal Air Force instructed bomber crews to bring unexpended bombs home.
[6] At the beginning of the Iraq War, the US Military destroyed a dwelling considered to be the temporary home of Iraqi President Saddam Hussein.
It was described by military sources and in subsequent media reports as a situation where a target of opportunity had presented itself.
Generally fleeting in nature, it should be attacked as soon as possible within the time limitations imposed for coordination and warning of friendly troops and aircraft.