The phrase Defence Force(s) (or Defense Force(s) in US English - see spelling differences) is in the title of the armed forces of certain countries and territories.
At the start of the Cold War, the United States Air Force had established the Aerospace Defense Command. It was broken into three different regions:
In South Africa under apartheid the nominally independent Bantustans had their own forces, separately from the South African Defence Force:
Within the ongoing civil war in Myanmar, several different rebel groups have declared themselves "defense forces":
A number of football clubs related to defence forces are also named such, for example: