The seventh edition of the International Military Sports Council (CISM) World Military Games officially begins tomorrow in Wuhan.
Nearly 10,000 military personnel from more than 100 countries will gather in the capital of central China's Hubei province.
It marks the most participants at the quadrennial event in its 24-year history.
Russia, the medal table-toppers at five of the previous six editions of the CISM World Military Games, have sent a 300-strong team of athletes to Wuhan.
Among them is diver Ilya Zakharov, the London 2012 Olympic gold medallist in the 3 metres springboard event.
The team also includes fencers Timur Safin and Aleksey Cheremisinov, both of whom were part of the gold medal-winning men's team foil side at the Rio 2016 Olympics.
They are joined by the Rio 2016 women's foil champion Inna Deriglazova and three-time International Association of Athletics Federations World Championships gold medal-winning high jumper Mariya Lasitskene.
Brazil also have an impressive record at the CISM World Military Games, topping the medal standings at their home edition in Rio de Janeiro in 2011 and finishing second only to Russia at the 2015 edition in Mungyeong in South Korea.
They have also sent a large delegation, second only to that of hosts China.
It includes gymnast Arthur Zanetti, the men's rings gold medallist at London 2012 and silver medallist at Rio 2016.
The 2019 CISM World Military Games are due to run through to October 27.
A total of 31 sports feature on the programme.