Established in 1957, the Frogman Corps serves as the elite special forces of Denmark. This group of highly trained individuals is more capable on water than they are on land, hence the name Frogman. They are still dangerous on the ground but when it comes to hijacking ships and other maritime vehicles, the Frogman Corps are the ones to get the job done.

The Frogman Corps only pick the best of the best. Since its establishment in 1957, there has only been over 300 who have completed the training to become a part of the Frogman Corps. During a 9-month training process, candidates have to undergo several training courses that will fully test their skills on the water. This includes a combat swimmer course. After the 9-month training process, less than a dozen complete the course.