The U.S. Army Soldier Support Institute (SSI) was established in July 1973, at Fort Benjamin Harrison, Ind., as the U.S. Army Institute of Administration (AIA).

AIA became the training component of the U.S. Army Administration Center (ADMINCEN), one of three combat and training development integrating centers assigned to the U.S. Army Training and Doctrine Command (TRADOC).

ADMINCEN became the TRADOC focal point for Army missions related to pay, personnel and administration, military justice, religious activities, medical services, public affairs and foreign language training. In 1980, ADMINCEN was reorganized into the U.S. Army Soldier Support Center (SSC), gaining mission responsibility for the “human dimension” of military operations doctrine and training aimed at improving the foundations of military leadership and ethics and increasing Soldier performance and unit cohesion.

With the establishment of SSC, the Institute of Administration was reorganized into the U.S. Army Institute of Personnel and Resource Management (IPRM).