Article 2. Persons Subject to Military Law. —

The following persons are subject to these articles and shall be understood as included in the term "any person subject to military law" or "persons subject to military law," whenever used in these articles:

1. All officers and soldiers in the active service of the Armed Forces of the Philippines or of the Philippine Constabulary; all members of the reserve force, from the dates of their call to active duty and while on such active duty; all trainees undergoing military instructions; and all other persons lawfully called, drafted, or ordered into, or to duty or for training in, the said service, from the dates they are required by the terms of the call, draft, or order to obey the same;

2. Cadets, flying cadets, and probationary second lieutenants;

3. All retainers to the camp and all persons accompanying or serving with the Armed Forces of the Philippines in the field in time of war or when martial law is declared though not otherwise subject to these articles;

4. All persons under sentence adjudged by courts-martial.