Its aim is to guarantee the preservation of the independence and sovereignty of the state, the integrity of its land area and its constitutional order.

The Defence League possesses arms and engages in military exercises, fulfilling the tasks given to it by the law.

The main goal of the Defence League is, on the basis of the citizens’ free will and initiative, to enhance the readiness of the nation to defend its independence and its constitutional order, including in the event of military threat.

Units, consisting of voluntary members of the Defence League, also participate in international peace support operations such as in the Balkan states.

The objective of the organisation is to raise these young people as good citizens with healthy bodies and minds.

[5][7] Idea for such a unit originally came from President Lennart Meri in 2001 whilst he was visiting the Viljandi Folk Music Festival.

[5][7] The idea was later revived by President Toomas Hendrik Ilves in 2010 and Ando Kiviberg, notable local piper and head of Viljandi's folk festival, was assigned to form the band.

The basic infantry weapon of the Defence League is the 5.56mm LMT R-20 Rahe, but the majority of the memberbase is equipped with the 7.62mm G3 rifle and its variants.

[12] The Defence League utilizes a variety of tactical transport vehicles and a small number of BTR-80 armoured personnel carriers.