 Bosch akanga abva kuCuba muna July 1960 pashure pokunge abatsira kuronga kupandukira kwakanga kwakundikana kwairwisana naCastromumakomo eEscambray, uye akaramba achibatanidzwa mumibato inorwisana naCastro pashure pokutamira kuMiami. Bosch akabatsira kuronga Movimiento Insurreccional de Recuperacion Revolucionaria Insurrectional Movement of Revolutionary Recovery, MIRR, iyo yakaita kurwisa mafekitori nemichina yeshuga muCuba, uye yakati ndiyo yaive nemhosva yekurwisa mabhomba gumi nerimwe kurwisa zvivakwa zvehurumende. Kubva muna January kusvika muna November 1962, uye zvakare muna November 1963, Bosch akanga achisangana neUnited States Central Intelligence Agency CIA. Muchiitiko chokutanga, Bosch aida kubatsira kuronga kuedza kupinda muCuba, uye akawana zvinhu uye dzimba dzakachengeteka dzechikwata; pane yechipiri, Bosch akatsvaga mari yekurwisa ndege kuCuba, iyo CIA yakaramba. Chinyorwa cheCIA cha1976 chakarondedzera Bosch saGeneral Coordinator weMIRR panguva yekubatana kwake neCIA. 