The Day of the Martyrs of the Revolution is observed in Cuba on July 30, commemorating those who fell victim to the dictatorial regime of Fulgencio Batista, particularly honoring the revolutionary Frank País. This date marks the anniversary of País's death in 1957, who was a key organizer of the 26th of July Movement and coordinated the urban underground resistance while Fidel Castro's guerillas fought in the Sierra Maestra mountains. Following País's death, which occurred during a police confrontation, a general strike erupted, becoming a pivotal event in the Cuban Revolution. The day is marked with solemn remembrance ceremonies across the country, especially in Santiago de Cuba, where the urban underground movement was strongest. The observance serves to honor the sacrifices made in the struggle against Batista's regime and to remember the legacy of those who fought for Cuba's liberation.