The 66th Infantry Regiment was an infantry

regiment A regiment is a military unit. Its role and size varies markedly, depending on the country, military service, service, or administrative corps, specialisation. In Middle Ages, Medieval Europe, the term "regiment" denoted any large body of l ...

in the

Imperial Japanese Army The Imperial Japanese Army (IJA; , ''Dai-Nippon Teikoku Rikugun'', "Army of the Greater Japanese Empire") was the principal ground force of the Empire of Japan from 1871 to 1945. It played a central role in Japan’s rapid modernization during th ...

. The regiment was attached to the 127th Infantry Brigade of the 114th Division and participated during the

Second Sino-Japanese War The Second Sino-Japanese War was fought between the Republic of China (1912–1949), Republic of China and the Empire of Japan between 1937 and 1945, following a period of war localized to Manchuria that started in 1931. It is considered part ...

. It was later reassigned to the 51st Division and during the later stages of

World War II World War II or the Second World War (1 September 1939 – 2 September 1945) was a World war, global conflict between two coalitions: the Allies of World War II, Allies and the Axis powers. World War II by country, Nearly all of the wo ...

, the regiment was in

New Guinea New Guinea (; Hiri Motu: ''Niu Gini''; , fossilized , also known as Papua or historically ) is the List of islands by area, world's second-largest island, with an area of . Located in Melanesia in the southwestern Pacific Ocean, the island is ...

, as part of the

Japanese Eighteenth Army The was a field army of the Imperial Japanese Army during World War II. History The Japanese 18th Army was formed on November 9, 1942, under the Japanese Eighth Area Army of the Southern Expeditionary Army Group for the specific task of opposin ...

Organization

*1st Battalion *2nd Battalion *3rd Battalion

Notes

Infantry Regiments (Imperial Japanese Army) {{Japan-mil-unit-stub