(c) Those who, having been born outside of the territory of the Republic, of a father or mother who is a native of Cuba but who lost that nationality, claim Cuban citizenship in the manner and subject to the conditions fixed by law.
(d) Foreigners who rendered service for a year or more in the army of liberation, remaining in it until the termination of the War for Independence, provided they prove this status by a Satisfactory legal document issued by the National Archives.
13. Cubans by naturalisation are:
(a) Foreigners who, after 5 years of continuous residence in the territory of the Republic and not less than 1 year after having declared their intention to acquire Cuban nationality, obtain citizenship papers in accordance with law, provided they are familiar with the Spanish language.
(6) Foreign men who marry Cuban women, and foreign women who marry Cuban men, when children are born of that union or they reside in the country continuously for 2 years after being married, and provided that they first renounce their original nationality.
14. Citizenship papers and certificates of Cuban nationality shall be exempt from taxation.
15. Cuban citizenship is lost by:
(a) Those who acquire foreign citizenship.
(b) Those who, without permission from the Senate, enter the military service of another nation, or perform functions which carry with them their own authority or jurisdiction.
(c) Naturalised Cubans who reside for 3 consecutive years in their country of birth, unless each 3 years they state before the corresponding consular authority their will to retain Cuban citizenship.
Crimes and reasons of unworthiness producing loss of citizenship by naturalisation, by means of a final sentence of the competent courts, can be determined by law.
(d) Naturalised citizens who accept a double citizenship.
The loss of citizenship for the reasons specified in Sections (b) and (c) of this Article shall be made effective only by a final decision in proceedings in which the interested person is heard, before a court of justice, as provided by law.
