24-year-old Tanushri Pareek joined the Border Security Force Officers Training Academy at Tekanpur where she is the lone woman in the 64-member batch.
These trainee officers will train for 52 weeks before being commissioned into the force in the entry rank of Assistant Commandant.
Pareek, a resident of Rajasthan's Bikaner, is the first woman to have joined the BSF in the officer rank after she was selected in the all-India exam conducted by the UPSC in 2014.
The force had begun induction of woman officers in 2013.
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"She is not only the lone lady officer in her batch but also the only direct entry woman officer in the 2.5 lakh personnel strong force," a senior official said.
There are about 2,000 women combatants in the force in the ranks of constables.
Last year, Indian Police Service (IPS) officer Satwant Atwal Trivedi became the first woman officer to join the BSF on deputation as a Deputy Inspector General.