There are two 18 Deltas per A team. They employ conventional and unconventional warfare techniques in providing medical care and treatment. They utilize the latest in field medical technology and are capable of managing just about any battlefield trauma. The medical sergeant is also responsible for the medical readiness of the detachment. In addition he provides medical screening, care, laboratory, and pharmacological needs for indigenous patients. The SF medic is an important part of any civic action operations, bringing medical treatment to native populations. He is versed in pediatric, dermatological, infectious, obstetric, dental, and even veterinary medicine. Every 18 Delta can train, advise, or lead indigenous company sized forces.

Each 18 Delta must first go through the Special Forces Assessment and Selection (SFAS) where they have to swim in boots and BDUs, run an obstacle course, and take long treks with a loaded rucksack. During this time they are assessed on their ability to work as a team member. Upon selection they then enter the Special Forces Qualification Course (SFQC or "Q Course").

SFQC is divided into three phases, The Individual Skill Phase, The MOS Qualification Phase, and The Collective Training Phase. The first phase lasts 40 days and includes land navigation, patrolling, and an obstacle course. In the qualification phase, which lasts 53 weeks, they are trained  in advanced medical procedures, consisting of trauma management, surgical, dental, and veterinary procedures. Upon completion of training they are paramedics. The third phase lasts 38 days and consists of Special Forces doctrine and organization, unconventional warfare operations, direct action operations, airborne and airmobile operations, and methods of instruction.