AR 351-9 governs policies, responsibilities, and functions for Inter-Service training across the military Services.
View AR 351-9 on armypubs.army.mil
AR 351-9 describes Inter-Service training, the organization of the Inter-Service Training Review Organization, and Services’ funding responsibilities. It includes requirements for training coordination, course management, resource evaluation, and internal control evaluation.
Inter-Service training occurs when one or more military Services train together in a formal environment on individual skills in an institutional setting.
All Inter-Service training is not governed by the ITRO and its procedures.
The ITRO is a voluntary organization of the military Services established to set policies and procedures for Inter-Service training and improve the effectiveness and efficiency of Service individual skills training consistent with individual Service requirements. (paragraph 7)
Provide other Services with written notification 1 year prior to deconsolidation from training. (paragraph 7)