The rebelling group of insurgents was a mix of former Batista soldiers, local farmers, and former allied guerrillas who had fought alongside Castro against Batista during the Cuban Revolution.
Kelompok pemberontak tersebut adalah perpaduan dari bekas prajurit Batista, petani lokal, dan bekas gerilyawan sekutu yang bertarung bersama dengan Castro melawan Batista saat Revolusi Kuba.