He participated in the Ten Years' War and protested with Maceo in Mangos de Baraguá in defense of the total and definitive independence of Cuba.

He was a student of the terrain and of the ordinances and laws of the Cuban Revolutionary Army, for which he distinguished himself as a disciplined and zealous officer of duties.

The provisional government of Baraguá promoted him to brigadier general and appointed him head, in commission, of the division of Cuba and Bayamo.

After capitulating, he fled to New York City, United States, to return months later with the aim of organizing a new uprising.

When he was preparing for the Little War in the Eastern parts of the island, he was arrested in Santiago de Cuba, on March 13, 1879, and sent to Spain.

[1] He failed, he left Puerto Limon, Costa Rica on 25 March 1895 in the steamer "Adirondack" to the front of 22 expedition members, among whom were brothers Antonio and José Maceo.

From October to April 1895, Crombet fell while fighting in Alto de Palmarito, Baracoa, where the event is remembered and that repeated phrase martiana: "... Flor has a noble heart, sound judgment and think as I think about future destinations of Cuba ".

[1][2] On June 30, 1899, the executive committee of the Assembly of Representatives of the Cuban revolution, issued diploma Major General on April 1, 1895.