Beginning in 2009 the Mexican wrestling promotion International Wrestling Revolution Group (IWRG; Sometimes referred to as "Grupo Internacional Revolución" in Spanish) held an annual show called "Guerra Revolucionaria" ("The Revolutionary War"), a reference to the Mexican revolutionary war (1810-1821). The main event match, the eponymous "Guerra Revolucionaria", a 20-man Battle Royal where all 20 wrestlers start out in the ring. Once a wrestler is thrown over the top rope to the floor that wrestler is eliminated from the actual match and instead will act as a "Lumberjack" outside the ring, ensuring that none of remaining competitors try to escape the ring. Each "lumberjack" is given a leather strap that they are allowed to use on anyone that leaves the ring. The multi-man match often allows IWRG to intersect various ongoing storylines as another step in the escalating tension. At other times the match itself was used as a way to start new feuds due to interactions inside or outside the ring. The "Guerra Revolucionaria" shows, as well as the majority of the IWRG shows in general, are held in "Arena Naucalpan", owned by the promoters of IWRG and their main arena. The 2015 "Guerra Revolucionaria" show was the sixth time IWRG held a show, not holding a show in 2014.