Involved with anarchist activities by the age of 17, she was part of an armed group ready to take on nationalist forces when the Spanish Civil War started in July 1936.
She saw action in Barcelona and Aragon, before eventually moving to a French refugee camp where she gave birth to her only son.
Pérez Collado also reconnected with Maurici Palau, and the couple opened a jewelry and underwear shop which hosted anarchist meetings.
Following the death of Francisco Franco, she became more openly involved in local organizing events and continued her anarchist activities.
[2] When the Civil War started in July 1936, Pérez Collado already had access to weapons and was ready to head to the front.
Part of an anarchist group that were preparing for what they saw as an inevitable military uprising, she trained with weapons in anticipation of an upcoming conflict.
[3] In the early days of the war, Pérez Collado was part of Los Aguiluchos Column, a group of 100 armed soldiers from her Barcelona neighborhood.
The women were eventually moved off the front by the end of the year, and she returned to Barcelona to work in a munitions factory.
[3] Back in Barcelona in May 1937, Pérez Collado was ambushed and wounded while patrolling the area near Plaza de Catalunya.
[2] In September 1942, Pérez Collado returned to Barcelona only to lose custody of her son because the state determined she could not adequately care for him.
Finding work as a domestic for a Jewish family, they went on to assist her in regaining custody of him by demonstrating she had enough money to raise him.