 During the invasion, Mas Canosa's boat was held offshore during the invasion and after a short time in the United States Army, he left the army.After the army, Mas Canosa held blue-collar jobs, washed dishes and delivered milk to support his family.In the early 1960's Mas Canosa was deeply involved with the CIA-backed group RECE (Cuban Representation in Exile), and, according to his brother Ricardo, its military arm, CORU (Commandos of the United Revolutionary Organizations), an alliance of twenty men of the most extreme anti-Castro groups run by dedicated militants such as Orlando Bosch, Luis Posada Carriles and Ignacio and Guillermo Novo.