Answer by taking a quote from the following article:

Jose Julian Marti Perez (January 28, 1853 - May 19, 1895) was a Cuban National Hero and an important figure in Latin American literature. During his life, he worked as a poet, essayist, journalist, translator, professor, and publisher. He was very politically active, and is considered an important revolutionary philosopher and political theorist. Through his writings and political activity, he became a symbol of Cuba's bid for independence against Spain in the 19th century, and is referred to as the "Apostle of Cuban Independence."

January 12, 1895, the North American authorities stopped the steamship Lagonda and two other suspicious ships, Amadis, and Baracoa at the Fernandina port in Florida, confiscating weapons and ruining Plan de Fernandina (Fernandina Plan). On January 29, Marti drew up the order of the uprising, signing it with general Jose Maria Rodriguez and Enrique Collazo. Juan Gualberto Gomez was assigned to orchestrate war preparations for La Habana Province, and was able to work right under the noses of the relatively unconcerned Spanish authorities. Marti decided to move to Montecristi, Dominican Republic to join Maximo Gomez and to plan out the uprising.  The uprising finally took place on February 24, 1895. A month later, Marti and Maximo Gomez declared the Manifesto de Montecristi, an "exposition of the purposes and principles of the Cuban revolution". Marti had persuaded Gomez to lead an expedition into Cuba.  Before leaving for Cuba, Marti wrote his "literary will" on April 1, 1895, leaving his personal papers and manuscripts to Gonzalo de Quesada, with instructions for editing. Knowing that the majority of his writing in newspapers in Honduras, Uruguay, and Chile would disappear over time, Marti instructed Quesada to arrange his papers in volumes. The volumes were to be arranged in the following way: volumes one and two, North Americas; volume three, Hispanic Americas; volume four, North American Scenes; volume five, Books about the Americas (this included both North and South America); volume six, Literature, education and painting. Another volume included his poetry.  The expedition, composed of Marti, Gomez, Angel Guerra, Francisco Borreo, Cesar Salas and Marcos del Rosario, left Montecristi for Cuba on April 1, 1895. Despite delays and desertion by some members, they got to Cuba. They landed at Playitas, near Cape Maisi and Imias, Cuba, on April 11. Once there, they made contact with the Cuban rebels, who were headed by the Maceo brothers, and started fighting against Spanish troops. The revolt did not go as planned, "mainly because the call to revolution received no immediate, spontaneous support from the masses." By May 13, the expedition reached Dos Rios. On May 19, Gomez faced Ximenez de Sandoval's troops and ordered Marti to stay rearguard, but Marti separated from the bulk of the Cuban forces, and entered the Spanish line.

What did they do about the masses
On May 19, Gomez faced Ximenez de Sandoval's troops and ordered Marti to stay rearguard, but Marti separated from the bulk of the Cuban forces, and entered the Spanish line.