After serving in a variety of administrative positions within the Imperial Japanese Army General Staff, including a stint as instructor at the Infantry School from 1932 to 1934, Iida was appointed commander of the 4th Imperial Guards Regiment from 1934 to 1935.
After holding various administrative positions within the Imperial Japanese Army General Staff, including a stint as an instructor at the Infantry School from 1932 to 1934, Iida was appointed commander of the 4th Imperial Guards Regiment from 1934 to 1935.