It includes: The first notice of the employment of combat divers by Portugal occurred in 1580, during the War of the Portuguese Succession.

In that occasion, Portuguese combat divers attacked the enemy Spanish ships that were in the Tagus, in order to damage their hulls.

The DMS continue to be assigned to the Navy's Guinea Maritime Defense Command due to the operational imperatives of its activities.

1 (DMS1) was reactivated on 1 June, 1988, because there was a need of an operational unit specially dedicated to the military diving area.

Public interest activities, namely salvage diving and air-sea rescue were still assigned to the Divers School.