The Marine Corps has three types of commissioned officers: Warrant Officers, Limited Duty Officers, and Unrestricted Line Officers.
Below are the job descriptions for Marine Corps commissioned officers in Occupational Field 44 -- Legal Services.
Warrant Officer Jobs:
4405 -- Master of International Law
4406 -- Master of Environmental Law
4407 -- Master of Labor Law
4408 -- Master of Procurement Law
4409 -- Master of Criminal Law
4410 -- Master of Law (General)
4430 -- Legal Administrative Officer
Limited Duty Officer Jobs:
4405 -- Master of International Law
4406 -- Master of Environmental Law
4407 -- Master of Labor Law
4408 -- Master of Procurement Law
4409 -- Master of Criminal Law
4410 -- Master of Law (General)
Unrestricted Line Officer Jobs:
4402 -- Judge Advocate
4405 -- Master of International Law
4406 -- Master of Environmental Law
4407 -- Master of Labor Law
4408 -- Master of Procurement Law
4409 -- Master of Criminal Law
4410 -- Master of Law (General)

