Japanese war fan
War fans varied in size, materials, shape and use. One of the most significant uses was as a signalling device. Signalling fans came in two varieties:
- a real fan that has wood or metal ribs with lacquered paper attached to the ribs and a metal outer cover
- a solid open fan made from metal and/or wood, very similar to the gunbai used today by sumo referees.
Types of Japanese war fans 
- Gunsen (軍扇) were folding fans used by the average warriors to cool themselves off. They were made of wood, bronze, brass or a similar metal for the inner spokes, and often used thin iron or other metals for the outer spokes or cover, making them lightweight but strong. Warriors would hang their fans from a variety of places, most typically from the belt or the breastplate, though the latter often impeded the use of a sword or a bow.
- Tessen (鉄扇) were folding fans with outer spokes made of heavy plates of iron which were designed to look like normal, harmless folding fans or solid clubs shaped to look like a closed fan. Samurai could take these to places where swords or other overt weapons were not allowed, and some swordsmanship schools included training in the use of the tessen as a weapon. The tessen was also used for fending off arrows and darts, as a throwing weapon, and as an aid in swimming.
- Gunbai (Gumbai), Gunpai (Gumpai) or dansen uchiwa (軍配) were large solid open fans that could be solid iron, metal with wooden core, or solid wood, which were carried by high-ranking officers. They were used to ward off arrows, as a sunshade, and to signal to troops.
War fans in history and folklore 
One particularly famous legend involving war fans concerns a direct confrontation between Takeda Shingen and Uesugi Kenshin at the fourth battle of Kawanakajima. Kenshin burst into Shingen's command tent on horseback, having broken through his entire army, and attacked; his sword was deflected by Shingen's war fan. It is not clear whether Shingen parried with a tessen, a dansen uchiwa, or some other form of fan. Nevertheless, it was quite rare for commanders to fight directly, and especially for a general to defend himself so effectively when taken so off-guard.
Araki Murashige is said to have used a tessen to save his life when the great warlord Oda Nobunaga sought to assassinate him. Araki was invited before Nobunaga, and was stripped of his swords at the entrance to the mansion, as was customary. When he performed the customary bowing at the threshold, Nobunaga intended to have the room's sliding doors slammed shut onto Araki's neck, killing him. However, Araki supposedly placed his tessen in the grooves in the floor, blocking the doors from closing.
War fans outside Japan 
Fans are also used for offensive and defensive purposes in the Chinese and Korean martial arts. They are called "铁扇" (tiě shàn, literally "iron fan") in Chinese, and "부채" (buchae) in Korean – see Korean fighting fan.
In popular culture 
- Video games, in the Koei Tecmo series Samurai Warriors (Sengoku Musou), Takeda Shingen wields a dansen uchiwa in the first game in Samurai Warriors 2 (Sengoku Musou 2), Ishida Mitsunari also wields a tessen. War fans are used by the popular video game female ninja characters Mai Shiranui (wooden-paper fans in the Fatal Fury and The King of Fighters series) and Kitana (a pair of sharp metal fans in the Mortal Kombat series and films). In Team Fortress 2, the Scout can unlock a war fan as a melee weapon. Touhou Project character Yuyuko Saigyouji uses paper fans to unleash her spells. In the Guilty Gear series the character Anji Mito uses war fans
- Movies, in the French martial arts action film Le Pacte des Loups (Brotherhood of the Wolf) Sylvia (Monica Bellucci) uses a War Fan in the climax of the film.
- Manga, Cartoon and anime, in series such as InuYasha by Kagura, Naruto by Temari, Madara Uchiha, Code Lyoko by Yumi Ishiyama, Nurarihyon no Mago by Hagoromo Gitsune, Saiyuki by Genjyo Sanzo and Daitarn 3 by the eponymous robot.
- Animated television series, in series such as Avatar: The Last Airbender by Avatar Kyoshi and the Kyoshi Warriors, Naruto by Temari, Code Lyoko by Yumi Ishiyama and Teenage Mutant Ninja Turtles by April O'Neil
See also 
- William E. Deal, Handbook to Life in Medieval and Early Modern Japan, p.167
- Louis Frédéric, Japan Encyclopedia, p.267
- Oscar Ratti, Adele Westbrook, Secrets of the Samurai: A Survey of the Martial Arts of Feudal Japan, p.296-304
- Jōchi Daigaku, JSTOR (Organization), Monumenta Nipponica, Volume 16, p.71-p.73
- Karl M. Schwarz, Netsuke Subjects: A Study on the NetsukeThemes With Reference to Their Interpretation and Symbolism, p.116
- A Glossary of the Construction, Decoration and Use of Arms and Armor: In All Countries and in All Times, George Cameron Stone, Courier Dover Publications, 1999 P.256
- Oscar Ratti and Adele Westbrook, Secrets of the Samurai, Edison, NJ: Castle Books (1973).