|Faction: National Space Defence Force|
|Era: Biometal Wars|
"I will also secretly endow the National Space Defence Force (NSDF). No one will know about the NSDF… everyone will know about NASA." - President Dwight D. Eisenhower
The National Space Defence Force (NSDF) was a secret American military force active in the Solar System during the Cold war. It was created to find and protect deposits of Bio-Metal and combat the CCA. They are the player faction during the Stars and Stripes campaign.
The NSDF and its russian counterpart would join together to become an international peacekeeping force known as the ISDF.