In the view of modern tendencies, the cooperation between state armed institutions is extremely crucial. As an example could be mentioned the reaction of French government on the terrorist attack in Paris in the year 2015 – both, army and police, in close cooperation made a contribution solving this challenge. In the scale of Latvia the cooperation between National Armed Forces and State Border Guard could solve such problems like lack of personnel and equipment in State Border Guard. The aim of the current paper is to give insight in such themes as legal basis of the mentioned cooperation, the possibilities of involving National Armed Forces personnel in border surveillance, the possibilities of National Armed Forces personnel’s training i...