Watched the movie and didn't regret one bit. I find two flaws in the movie however.
1) Vicky Kaushal was seen saluting with his baton even when he was not a Field Marshal. This is unlikely as only Field Marshals are authorised to salute with their batons, other officers salute with the palm of their hands.
2) Vicky Kaushal portrayed Sam addressing. Indira Gandhi as "Madam" which as per Sam's own admission in an interview he addressed Indira Gandhi as "Prime Minister" and he never used the word "Madam" as he considers that the term also denotes certain ladies who supervises a certain not so exalted profession.
Apart from that, Vicky Kaushal did justice to the icon of Indian Military History.