Aldama became part of a
reformist delegation led by
José Morales Lemus in late 1866, traveling to
Madrid, Spain to negotiate reforms with the Spanish government. With the failure of these negotiations, the delegates aligned themselves with those who initiated the
Ten Years' War in 1868. Aldama served on the Revolutionary Committee of Havana with fellow members
José Morales Lemus, Antonio Fernández Bramosio, José Manuel Mestre, and José Antonio Echeverría. His property was seized by Spanish authorities on the orders of Spanish Military Governor
Domingo Dulce, who mandated an
embargo on April 1, 1869, against Cuban properties and assets. On May 10, 1869, Aldama arrived at the
Port of New York in the United States after departing Cuba's capital on board the
steamship S.S. Morro Castle. In November 1869, the revolutionary
Cuban Junta was reorganized in
New York City and Aldama assumed the role of the president of the Cuban Junta. The Cuban Junta in New York was formed to finance the uprising against the colonial regime of Spain in Cuba. A
court-martial was held on November 9, 1870, in which Aldama and others associated with the second junta of New York were convicted of treason and rebellion, with a death sentence by
garrote awaiting them if they fell into Spanish hands. In 1878, following the
Pact of Zanjón, his
palatial residence, near
Plaza del Vapor, was returned by the colonial government but never again occupied by the Aldama family. ==Death==