In the files of the Dominicans who held military ranks, the Spanish described him as a man of “a lot of influence with turbulent people,” which is equivalent to saying with the Creoles that they did not willingly accept the betrayal consummated in March 1861.

[4] Like Eusebio Manzueta, Marcos Adón was one of Pedro Santana's friends and subordinates, who did not openly oppose the decision of the general, but observed, after the fact, a distant attitude of non-complacency, in front of the civil and military authorities that Spain designated in the country.

In November, he was sent as a prisoner to Cuba and transferred, in the same capacity, to Spain from where he escaped, returning to Santo Domingo, to join the ranks of the patriots who were fighting against the Spanish troops.

Adón's guerrillas did not allow themselves to be seen by the enemy and at night they attacked the supply convoys, creating serious problems for the opposing forces, as recognized by military leaders González Tablas and José de la Gándera, in works that review that episode.

[6] The activity of Marcos Adón, head of the guerrilla vanguard that was part of the troops in the region, commanded by Eusebio Manzueta, caused serious damage to the enemy contingents, presenting a situation worthy of taking into account on that military front.

[6] It was a sensitive loss for the enemy, but militarily and politically more costly because Luperón, in rapid movement, occupied Monte Plata, Sabana Grande de Boyá and Bayaguana, making the field of operations of the opposing troops more limited.

In both confrontations, Marcos Adón was present, playing a starring role with his guerrillas, who had joined a German citizen named Brigman, supposedly naturalized although there is no record of this, who along with Olegario Tenares and other patriots was seriously injured.

When Buenaventura Báez returned to the presidency of the Dominican Republic in 1868, he went into exile to join with Luperón, Cabral and Pedro Antonio Pimentel to fight with them the project of annexation to the United States.

Tall, with dark skin, serene and firm gaze, wide-brimmed hat, plywood rifle, cockerel saber on his belt, high mid-calf boots, braids and cape; He is an authentic Creole man, a typical Dominican guerrilla, perhaps seventy years old, on whom time, despite his sacrificial existence, seems to have had no effect.