[1] An accomplished news writer and tanka poet before the war, during his time in camp Soga authored one of the earliest memoirs of the wartime detention of Japanese Americans, Tessaku Seikatsu or Life Behind Barbed Wire.
[2] In 1908, Soga, Fred Kinzaburo Makino, Motoyuki Negoro, and Yoichi Tasaka formed the Higher Wage Association (Zokyu Kisei Kai).
[4] Soga was arrested within hours of the attack on Pearl Harbor on December 7, 1941, and, like many other Issei community leaders, spent the entire war confined in a series of detention centers run by the Army and the Justice Department.
He arrived in San Francisco in August 1942 and was held at Fort McDowell for a month, after which he was again transferred to the Army internment camp at Lordsburg, New Mexico.
[5] Soga returned to Hawai'i in November 1945 and published a memoir of his experiences in camp, first as a series of articles in the Hawaii Times (the Nippu Jiji's new title) and then as a book in 1948.