Beating Retreat is held at Vijay Chowk in Delhi on Jan 29 eery year
Beating Retreat marks the end of 4-dat Republic Day celebrations
Bands from armed forces and paramilitary perform during the ceremony
Special song to mark 50 years of 1971 war victory will be played this year
The special composition is called 'Swarnim Vijay'
The President is the chief guest of the Vijay Chowk ceremony