question: Susumu Ito was assigned to which Japanese-American part of the US Army Reserve?
answer: 442nd Regimental Combat Team
context: Title: Permanent staff instructor
  Passage: A permanent staff instructor (PSI) is a warrant officer class 2 (WO2), or senior non-commissioned officer (sergeant, staff sergeant or colour sergeant), of the Regular British Army who has been selected to instruct Army Reserve soldiers.  Each AR unit has several PSIs attached to it.  A normal rifle company in a Regular Army battalion has a single WO2, serving in the role of company sergeant major (CSM).  An Army Reserve rifle company normally has two WO2s.  One is the CSM, normally a part-time member of the Army Reserve, and the other is the seconded PSI, the only full-time member of the company.  The PSI is meant to provide the reserve company with the benefit of his professional experience, as well as to ensure that the training and operation of the company adheres to the Army's methods and standards.  The PSI is typically responsible for much of the company's administration work, and usually takes a particular role in the training of junior NCOs (corporals and lance-corporals, and equivalent).
  Title: Susumu Ito
  Passage: He was in auto mechanic school when he was drafted into the military in 1940, two years before the Japanese attack on Pearl Harbor.  He worked as a mechanic, but was eventually assigned to the all Japanese-American 442nd Regimental Combat Team, which became the most decorated unit for its size and length of service in the U.S. Army during World War II.  He was an artillery spotter (forward field observer) assigned to C Battery.  He was promoted to the rank of second lieutenant on October 19, 1944.  Ito participated in the famous rescue of the "Lost Battalion", the first battalion of the 141st U.S. Infantry Regiment of the 36th Texas Division.  The action took place in the Vosges Mountains, in France, in October 1944.  Both units were attached to the Seventh U.S. Army.  The Lost Battalion had been cut off and surrounded by the Germans.  Lt. Ito was attached to I Company of the 442, which effected the rescue of the Lost Battalion.  Though the 442nd suffered extremely heavy casualties in the engagement, Ito emerged unscathed.  He was attached to I Company, of which only eight members survived this action.  Of the rescue, Ito later recalled, "Looking back, it wasn't an easy outing, but having come through it intact, it was an experience that cannot be forgotten or easily duplicated.  At the time, I thought that this was more or less a typical battle encounter with a strong enemy and not a special or unique mission.  I guess my analysis is not shared by history."  The U.S. Army later declared the Rescue of the Lost Battalion to be one of the top ten battles of the U.S. Army in its history.
  Title: 81st Infantry Division (United States)
  Passage: The 81st Infantry Division ("Wildcat") was an infantry division of the United States Regular Army that was mobilized for service in both World War I and World War II.  The division was inactivated in 1965 and reactivated as the 81st Army Reserve Command (ARCOM) 1967.  During that time, the 81st ARCOM was responsible for deploying US Army Reserve units to Vietnam, Southwest Asia, and the Balkans.  The 81st was redesignated in 1996 as the 81st Regional Support Command (RSC) and is responsible for all Army Reserve units in the southeast United States and Puerto Rico.
  Title: 442nd Infantry Regiment (United States)
  Passage: The 442nd Regimental Combat Team is an infantry regiment of the United States Army, part of the Army Reserve.  The regiment was a fighting unit composed almost entirely of American soldiers of Japanese ancestry (mostly from Hawaii) who fought in World War II.  Most of the families of mainland Japanese Americans were confined to internment camps in the United States interior.  Beginning in 1944, the regiment fought primarily in Europe during World War II, in particular Italy, southern France, and Germany.
citations: 442nd Infantry Regiment (United States) Susumu Ito