Delta Force Organization -

There is no insignia. No official history. When its members die, they are listed on memorials as belonging to a generic "US Army" unit. Officially, the U.S. Army’s 1st Special Forces Operational Detachment-Delta (1st SFOD-D) does not exist.

Here is a look inside the organization of the world’s most secretive elite fighting force.

But to counter-terrorism experts and geopolitical insiders, "Delta Force" is the gold standard. Known colloquially as "The Unit," this organization sits at the very tip of the American military spear. But what makes them different from Navy SEALs or Green Berets?

Inside the Unit That Doesn’t Exist: What Makes Delta Force the Ultimate Crisis Response Team