Enrique (Harry) Ruíz-Williams was a Cuban-born exile living in the United States who was second in command of the heavy weapons battalion of Brigade 2506 during the Bay of Pigs Invasion.

[2] Williams infamously set a quota during the invasion that each man of his unit should kill at least fifteen enemy combatants.

[3] He worked with Manuel Artime, Tony Varona, Rafael Quintero, Aureliano Arango and Jose Cardona to establish the Movement for the Recovery of the Revolution (MMR).

[2] One of the men in his unit recalled of Williams: "I found him in front of me in the jeep, lying there bleeding all over, as if he had exploded inside.

He was lying there as a person that is going to die very soon..."[2] Williams was taken to recover on a cot in a concrete beach house occupied by the invasion forces at Playa Giron.

[2] Williams recognized Castro immediately and reached under his pillow to grab a .45 pistol, attempting to kill the Cuban leader.

However, the other recovering men in the room remember that Williams only made a gesture to kill Castro, and was so delirious from his wounds that he thought he was holding an actual weapon that misfired.

[2] Williams was later moved to the Sanatorio (Sanatorium) prison area of the Castillo del Príncipe, with the rest of Brigade 2506.

Being a wounded prisoner, Williams was one of the first men of Brigade 2506 to return to the United States, landing in Miami, where they issued a statement to the press.

Williams worked with Allen Dulles, James B. Donovan, Bobby Kennedy and Alvaro Sanchez, Jr. to return the rest of the Brigade to the United States.

[5][6][7] After the last Brigade 2506 prisoners were returned to the United States, Williams was involved in the CIA's efforts in the Caribbean region and Latin America in some capacity.