This regulation prescribes selection criteria for assignment of Active Army personnel to the Defense Attaché System and selection criteria for assignment of Army Reserve Component personnel to DAS drilling individual mobilization augmentee positions. It specifies the responsibilities of headquarters, agencies, and staff support elements involved in AA and RC DAS activities, required qualifications for personnel seeking DAS duty, procedures for submitting initial DAS applications, requests for consecutive DAS assignments, and procedures for requesting assignment to RC DAS DIMA duty.