The Marine Corps Special Operations Battalion, also known as Tonelero Battalion/ Toneleros or Amphibious Commandos (COMANF), is a special operations battalion of the Brazilian Marine Corps.

Its attributes include planning, conducting and executing special reconnaissance, direct action, counterterrorism and hostage rescue operations in support of Brazilian Marine Corps operations.

Tonelero selection would then go through several changes throughout the years before being named "Special Course of Amphibious Commandos" (CEsComAnf) in 1998.

[1] Specialized Reconnaissance - RECON, pre-assault and post-assault reconnaissance actions are involved in support of landing forces, with highly qualified personnel as scuba divers or using the parachute as a means of infiltration with the mission of identifying and reporting enemy activities, conducting fires of support weapons, deploy sensors on the ground and guide operations with aircraft.

Regarding the management of its material and human resources, the Battalion has a Command and Services Company and administrative autonomy through which it plans and executes the resources received from the Fleet Marine Force - FFE.