Michigan Compiled Laws, Chapter 32. Military Establishment § 32.704

Sec. 304. The adjutant general shall select from among the qualified federally recognized officers of the army national guard a principal assistant to be known as “assistant adjutant general for army” to supervise the training, administration and supply of the army national guard, and a principal assistant from the air national guard to be known as “assistant adjutant general for air” to supervise the training, administration and supply of the air national guard and each shall have the rank of brigadier general and receive pay and allowances equal to that of an active army or air force officer of like grade and service. Officers so appointed shall serve at the pleasure of the adjutant general.