There are two 18 Bravos per A team. They employ conventional and unconventional warfare techniques in small unit and individual infantry operations. The weapons sergeant is also responsible for supervising and constructing hasty fortifications. 18 Bravos are proficient in almost every small arm and crew served weapon in existence, foreign and domestic, including rifles, pistols, machine guns, anti-aircraft, anti-armor, mortars, and grenade launchers. They are responsible for evaluating terrain, selecting weapons emplacements, and assigning targets and areas of fire. Each weapons sergeant is able to train, advise, or lead indigenous combat forces up to company size.

Each 18 Bravo 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 24 weeks, they are trained  operation and maintenance of all types of U.S. light weapons (up to and including 50 cal mMG), U.S. heavy weapons (up to and including the 4.2 in and 120mm mortar and 106mm RR), man-portable air defense weapons, U.S. anti-armor weapons (including anti-tank missile systems), and all foreign high-density light and heavy weapons. In addition they learn indirect fire operations, and emplacement and integrated combined arms fire control planning. 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.