Soldiers on camel back take part in a rehearsal ahead of the Beating the Retreat ceremony in New Delhi, India January 24, 2017. REUTERS/Cathal McNaughton - RTSX443

Indian soldiers march during a full dress rehearsal for the Republic Day parade in New Delhi, India, January 23, 2017. REUTERS/Adnan Abidi - RTSWWY8

Policemen in ceremonial attire take a selfie photo before the start of a full-dress rehearsal for the Republic Day parade in Mumbai, India January 24, 2017. REUTERS/Shailesh Andrade - RTSX29O

Soldiers take part in a rehearsal for India's Republic Day parade in New Delhi, India January 23, 2017. REUTERS/Cathal McNaughton - RTSWWUC

Soldiers on camels take part in a rehearsal for India's Republic Day parade in New Delhi, India January 23, 2017. REUTERS/Cathal McNaughton TPX IMAGES OF THE DAY - RTSWWUU

Assam's Veerangana commandos take part in a rehearsal for India's Republic Day parade at Khanapara in Guwahati, India January 23, 2017. India celebrates its annual Republic Day on January 26. REUTERS/Anuwar Hazarika - RTSWX32

A member of Iraqi security forces rides in a military vehicle during a battle with Islamic State militants in Mosul, Iraq January 23, 2017. REUTERS/Marius Bosch - RTSWZXA

Kolkata traffic police officers march during a full dress rehearsal for the Republic Day parade in Kolkata, India January 24, 2017. REUTERS/Rupak De Chowdhuri - RTSX29Z

Prime Minister Narendra Modi waves towards the crowd as he leaves after attending the Republic Day parade in New Delhi, India January 26, 2017. REUTERS/Adnan Abidi - RTSXEZ1

Indian police women attend a full-dress rehearsal for India's Republic Day parade in Srinagar January 24, 2017. REUTERS/Danish Ismail - RTSX259

The Daredevil motorcycle display team take part in a rehearsal for India's Republic Day parade in New Delhi, India January 23, 2017. REUTERS/Cathal McNaughton - RTSWWUS

Indian soldiers march during a full dress rehearsal for the Republic Day parade in New Delhi, India, January 23, 2017. REUTERS/Adnan Abidi - RTSWWYB

Image used for illustrative purpose. Indian policemen stand next to their rifles during a full-dress rehearsal for India's Republic Day parade in Srinagar January 24, 2017.

Soldiers take part in a rehearsal ahead of the Beating the Retreat ceremony in New Delhi, India January 24, 2017. REUTERS/Cathal McNaughton - RTSX441

Rockets are displayed during rehearsals for India's Republic Day parade in New Delhi, India January 23, 2017. REUTERS/Cathal McNaughton - RTSWWUD

The Daredevil motorcycle display team take part in a rehearsal for India's Republic Day parade in New Delhi, India January 23, 2017. REUTERS/Cathal McNaughton - RTSWWUR

Indian soldiers march during a full dress rehearsal for the Republic Day parade in New Delhi, India, January 23, 2017. REUTERS/Adnan Abidi - RTSWWY7

Indian Air Force's Russian-made Sukhoi Su-30 aircrafts fly past during a full dress rehearsal for the Republic Day parade in New Delhi, India January 23, 2017 REUTERS/Adnan Abidi - RTSWWZ2

Soldiers take part in a full-dress rehearsal for India's Republic Day parade in Bengaluru, India January 24, 2017. REUTERS/ Abhishek N. Chinnappa - RTSX2V3

Indian paramilitary soldiers take part in a full-dress rehearsal for the Republic Day parade in Agartala, India, January 24, 2017. India celebrates its annual Republic Day on January 26. REUTERS/Jayanta Dey TPX IMAGES OF THE DAY - RTSX20L

A police personnel takes oath during a full-dress rehearsal for Republic Day parade in Allahabad, India, January 24, 2017. India celebrates its annual Republic Day on January 26. REUTERS/Jitendra Prakash - RTSX211

Indian soldiers march during the Republic Day parade in New Delhi, India January 26, 2017. REUTERS/Adnan Abidi - RTSXEZN

An Indian policeman blows warm air onto his hand as he takes part in a parade to celebrate India's Republic Day on a cold winter day in Srinagar January 26, 2017. REUTERS/Danish Ismail - RTSXENB

An Indian paramilitary soldier adjusts the headgear of his colleague before taking part in the Republic Day parade in Agartala, India, January 26, 2017. REUTERS/Jayanta Dey - RTSXENP

A soldier on camel back takes part in a rehearsal ahead of the Beating the Retreat ceremony in New Delhi, India January 24, 2017. REUTERS/Cathal McNaughton - RTSX442

Commandos take part in a rehearsal for India's Republic Day parade in New Delhi, India January 23, 2017. REUTERS/Cathal McNaughton - RTSWWUF

Policewomen take part in a full-dress rehearsal for India's Republic Day parade in Guwahati, India, January 24, 2017. REUTERS/Anuwar Hazarika - RTSX3XQ

A soldier on camel back takes part in a rehearsal ahead of the Beating the Retreat ceremony in New Delhi, India January 24, 2017. REUTERS/Cathal McNaughton - RTSX43V