According to reports, Reza Gul was forced to pick up arms after her son was shot dead by Taliban militants in front of her eyes.
Her son was leading a small group of police forces in a check post located in a village of Farah province.
She was supported by her daughter and daughter-in-law during the gun battle which lasted for almost 7 hours that left at least 25 Taliban militants dead and five others injured.
Sediq Sediq, spokesman for the Ministry of Interior (MoI) said the armed campaign by women against the Taliban militants is a symbol of a major revolution and public uprising against the group.
The Taliban militants group has not commented regarding the incident so far.
Farah is among the volatile provinces in western Afghanistan where anti-government armed militants are actively operating in its various districts and frequently carry out insurgency activities.