Kangana got severely injured during an intense sword- fighting sequence with co-star Nihar Pandya, when the latter's sword accidentally hit her forehead, causing a deep cut.
The 30-year-old actress was soon rushed to a hospital and got 15 stitches on her forehead. The doctors have also advised her to rest for a few days.
"I am a bit embarrassed to be thrilled to have a battle scar on my face. Also, people from my team have been telling me that it's like that Peshwa teeka that Manikarnika wore," Kangana said in a statement here.
The actress has been training in sword fighting under Hollywood stunt director Nick Powell and also taking horse riding lessons.
Directed by Krish, "Manikarnika - The Queen of Jhansi" will see Kangana in the role of Rani Laxmibai of Jhansi.