Dr. Erskine developed the first “Super-Soldier Serum” as part of a top-secret US Gov test called Operation: Rebirth. The first and most successful user of the sss is Captain America Steve Rogers.

In Weapon plus program in which
The first project was Weapon I – known to us as Project; Rebirth – gave birth to several superhuman individuals. Steve Rogers – aka Captain America is one of them.

The operation or procedure is named as rebirth

As far as I can remember its Rebirth

It was named Rebirth operations for super soldier in captain America