It was DEVGRU (the artist formerly known as SEAL Team 6). Though their is some debate (among no one of note, ie: just military fellahs talking to each other for fun about an interesting operation) that it was CAG ("Delta Force") because they always do awesome stuff and pass on the accolades to other people.
That nigga is dead, and damn if that operation wasn't text book and amazing. Also, the video of the compound shows pools of blood all over the place, win. Either way: raiding a compound and killing the shit out of a number of people and sustaining no casualties = epic. Dem DEVGRU d00ds iz trained up yo.