| Imperial Japanese Navy | |
|---|---|
| 大日本帝國海軍 (Dai-Nippon Teikoku Kaigun) | |
 | |
| Founded | 1868 |
| Disbanded | 1945 |
| Country |  Japan |
| Allegiance | Emperor of Japan |
| Branch | |
| Type | Navy |
| Role | Naval warfare |
| Part of | |
| Colors | Navy Blue and White |
| March | "Gunkan kōshinkyoku" ("Gunkan March") |
| Anniversaries | 27 May |
| Engagements | |
| Commanders | |
| Commander-in-chief | Emperor of Japan |
| Minister of the Navy | See list |
| Chief of the Navy General Staff | See list |
| Insignia | |
| Roundel | .svg) |
| Ranks | Ranks of the Imperial Japanese Navy |
| Aircraft flown | |
| List of aircraft | |
The Imperial Japanese Navy (IJN; Kyūjitai: 大日本帝國海軍 Shinjitai: 大日本帝国海軍 'Navy of the Greater Japanese Empire', or 日本海軍 Nippon Kaigun, 'Japanese Navy') was the navy of the Empire of Japan from 1868 to 1945, when it was dissolved following Japan's surrender in World War II. The Japan Maritime Self-Defense Force (JMSDF) was formed between 1952 and 1954 after the dissolution of the IJN.[1]
The Imperial Japanese Navy was the third largest navy in the world by 1920, behind the Royal Navy and the United States Navy (USN).[2] It was supported by the Imperial Japanese Navy Air Service for aircraft and airstrike operations from the fleet. It was the primary opponent of the Western Allies in the Pacific War.
The origins of the Imperial Japanese Navy date back to early interactions with nations on the Asian continent, beginning in the early feudal period and reaching a peak of activity during the 16th and 17th centuries at a time of cultural exchange with European powers during the Age of Discovery. After two centuries of stagnation during the country's ensuing seclusion policy under the shōgun of the Edo period, Japan's navy was comparatively antiquated when the country was forced open to trade by American intervention in 1854. This eventually led to the Meiji Restoration. Accompanying the re-ascendance of the Emperor came a period of frantic modernization and industrialization. The IJN saw several successes in combat during the early twentieth century, sometimes against much more powerful enemies, such as in the Sino-Japanese War and the Russo-Japanese War, before being largely destroyed in World War II.