Operational Detachment Alpha
Going unnoticed during their missions is critical for Green Berets. It's important for them to be organized in small, highly trained groups. This way they get things done in a quick and effective manner.
Special Forces groups are organized in small teams of 12 men — a.k.a. Operational Detachment Alpha (ODA). A typical Green Berets Team structure usually consists of two each of the following: Weapons Sergeants, Communications Sergeants, Medical Sergeants and Engineering Sergeants. A Commander, Assistant Commander (Warrant Officer), Operations/Intelligence Sergeant and Non-Commissioned Officer In Charge (NCOIC) complete the team. These teams can change according to the type of mission.
Each Soldier in an ODA is specially trained and cross-trained in different disciplines. See below for a brief job description for each ODA team member.