Aleida March was an active combatant in Che Guevara's Lightning Campaign in December 1958. She was present at the battle for Las Villas in which Column 8 of the 26th of July Movement was ordered by Fidel Castro to paralyze the occupying military forces of President Fulgencio Batista in the province.
Her marriage with Che Guevara is reported to have happened both on 23 March 1959 and 2 June 1959, after his divorce from Hilda Gadea. A civil ceremony was held at La Cabana Military fortress. After the June 2 marriage, Guevara and Aleida went to Tarara, a seaside resort town 20 kilometers from Havana for their honeymoon. The couple had four children together: Aleida, Camilo, Celia, and Ernesto.
She is the author of the book Evocation which is about her falling in love and marrying Che Guevara, and raising their four children after his death.