This is the order of battle of the Japanese and Russian fleets at the Battle of Tsushima on 2728 May 1905.
Japanese Combined Fleet
Source: "Combined Fleet Command for Battle of Tsushima" Japanese version Wikipedia
First Squadron
(Admiral Tōgō Heihachirō) First Division (Vice Admiral Misu Sōtarō) Mikasa (Fleet Flagship) (variant of Formidable-class battleship) Captain Ijichi Hikojirō Shikishima (Shikishima-class battleship) Captain Teragaki Izō Fuji (Fuji-class battleship) Captain Matsumoto Kazu Asahi (Variant of Shikishima class) Captain Nomoto Tsunaaki Nisshin (Flagship for Misu) (Giuseppe Garibaldi-class armoured cruiser) Captain Heitarō Takenouchi Kasuga (Giuseppe Garibaldi-class armoured cruiser) Captain Katō Sadakichi Tatsuta (Dispatch Vessel) Commander Yamagata Bunzō Third Division (Vice Admiral Dewa Shigetō) Kasagi (Flagship) (Kasagi-class protected cruiser) Captain Yamaya Tanin Chitose (Kasagi-class protected cruiser) Captain Takagi Sukekazu Niitaka (Niitaka-class protected cruiser) Captain Shōji Yoshimoto Otowa (variant of Niitaka-class protected cruiser) Captain Arima Ryōkitsu First Destroyer Division (Captain Fujimoto Shūshirō) Harusame (Harusame-class destroyer) Captain Fujimoto Shūshirō Fubuki (Harusame-class destroyer) Lieutenant Tōjima Otsukichirō Ariake (Harusame-class destroyer) Lieutenant Commander Kutsumi Tsuneo Arare (Harusame-class destroyer) Lieutenant Watanabe Shingo Akatsuki (Ex-Russian destroyer Reshitel'nyi) Lieutenant Harada Shōsaku Second Destroyer Division (Captain Yajima Junkichi) Oboro (Ikazuchi-class destroyer) Lieutenant Fujiwara Eizaburō Inazuma (Ikazuchi-class destroyer) Lieutenant Commander Suga Tetsuichirō Ikazuchi (Ikazuchi-class destroyer) Lieutenant Commander Saitō Hanroku Akebono (Ikazuchi-class destroyer) Lieutenant Yamanouchi Shirō Third Destroyer Division (Captain Yoshijima Jyūtarō) Shinonome (Shinonome-class destroyer) Lieutenant Commander Yoshida Mōshi Usugumo (Shinonome-class destroyer) Lieutenant Commander Masuda Chūkichirō Kasumi (Akatsuki-class destroyer) Lieutenant Commander Shiraishi Naosuke Sazanami (Ikazuchi-class destroyer) Lieutenant Commander Aiba Tsunezō 14th Torpedo-Boat Division (Lieutenant Commander Seki Shigetaka) Chidori (Hayabusa-class torpedo boat) Lieutenant Commander Seki Shigetaka Hayabusa (Hayabusa-class torpedo boat) Lieutenant Ebihara Keiichi Manazuru (Hayabusa-class torpedo boat) Lieutenant Tamaoka Yoshirō Hashitaka (Hayabusa-class torpedo boat) Lieutenant Miyamoto Matsutarō
Second Squadron
(Vice Admiral Kamimura Hikonojō) Second Division (Rear Admiral Shimamura Hayao) Izumo (Squadron Flagship) (Izumo-class armoured cruiser) Captain Ijichi Suetaka Iwate (Flagship for Shimamura) (Izumo-class armoured cruiser) Captain Kawashima Reijirō Azuma (Armoured cruiser) Captain Murakami Kakuichi Tokiwa (Asama-class armoured cruiser) Captain Shigetarō Yoshimatsu Yakumo (Armoured cruiser) Captain Matsumoto Arinobu Asama (Asama-class armoured cruiser) Captain Yashiro Rokurō Chihaya (Dispatch Vessel) Commander Eguchi Rinroku Fourth Division (Vice Admiral Uryū Sotokichi) Naniwa (Flagship) (Naniwa-class protected cruiser) Captain Wada Kensuke Takachiho (Naniwa-class protected cruiser) Captain Mōri Ichihei Akashi (Suma-class protected cruiser) Captain Ushiki Kōshirō Tsushima (Niitaka-class protected cruiser) Captain Sentō Takenaka Fourth Destroyer Division (Captain Suzuki Kantarō) Asagiri (Harusame-class destroyer) Lieutenant Iida Nobutarō Murasame (Harusame-class destroyer) Lieutenant Commander Kobayashi Kenzō Shirakumo (Shirakumo-class destroyer) Lieutenant Commander Kamata Masamichi Asashio (Shirakumo-class destroyer) Lieutenant Commander Nanri Dan'ichi Fifth Destroyer Division (Commander Hirose Juntarō) Shiranui (Murakumo-class destroyer) Lieutenant Commander Kuwashima Shōzō Murakumo (Murakumo-class destroyer) Lieutenant Commander Shimanouchi Kanta Yūgiri (Murakumo-class destroyer) Lieutenant Commander Tashiro Miyoharu Kagerō (Murakumo-class destroyer) Lieutenant Yoshikawa Yasuhira 9th Torpedo-Boat Division (Commander Kawase Hayaharu) Aotaka (Hayabusa-class torpedo boat) Commander Kawase Hayaharu Kari (Hayabusa-class torpedo boat) Lieutenant Awaya Gazō Tsubame (Hayabusa-class torpedo boat) Lieutenant Tajiri Yuiji Hato (Hayabusa-class torpedo boat) Lieutenant Iguchi Daijirō 19th Torpedo-Boat Division (Commander Matsuoka Shūzō) Kamome (Hayabusa-class torpedo boat) Commander Matsuoka Shūzō Ōtori (Hayabusa-class torpedo boat) Lieutenant Ōtani Kōshirō Kiji (Hayabusa-class torpedo boat) Lieutenant Kanzai Uemon