orderly -
a soldier who serves as an attendant to a superior officer; "the orderly laid out the general's uniform"
attendant,
attender,
tender a person who is present and participates in a meeting; "he was a regular attender at department meetings"; "the gathering satisfied both organizers and attendees"
orderly -
a male hospital attendant who has general duties that do not involve the medical treatment of patients
A medical orderly (also known as a ward assistant or nurse assistant), is a hospital attendant whose job consists of assisting medical and/or nursing staff with various nursing and/or medical interventions. These duties are classified as routine tasks involving no risk for the patient.
