The ultimate clash between Hrithik Roshan and Tiger Shroff, who play a teacher-disciple duo in 'WAR', has been touted to be the "biggest war of the year".  Director Siddharth Anand comes equipped not just with bombastic descriptions but also breathtaking action sequences and spectacular visuals, as the trailer for the slick actioner proves. 

To be released on October 2 in Hindi, Telugu and Tamil (clashing with Chiranjeevi's 'Sye Raa'), the Bollywood flick's story of loyalty, betrayal, going rogue and more has been penned by Aditya Chopra and Siddharth Anand.  The trailer, released amid high expectations, shows the lead characters at war with each other in a multitude of landscapes.  

With music by Vishal-Shekhar, its lyrics are by Kumaar.  Benjamin Jasper has done the cinematography.  Also starring Vaani Kapoor in a glamorous role, it has been produced by Yash Raj Films.