In the context of military field, more and more international coalitions among allied forces have takenplace. Information from heterogeneous systems needs to be exchanged without misinterpretation so theinvolved participating actors can share a common situational awareness regarding certain data and/ormessages. This, in turn, requires the preservation of the intended meaning not only on the syntax,language, and representation level, but on a semantic level as well.The application domain of the Business Object Reference Ontology Program (BORO) method focuseson the development of ontological or semantic models for large complex operational applications,especially in the military context. It is chosen by FOI, the Swedish Defense Research Agency in thefield of Information Systems, to apply to their Semantic Interoperability (SI) project.The goal of this thesis is to investigate how BORO method can be implemented for aligning the dataand/or messages between the Swedish Armed Forces and other military organizations on a semanticlevel for the FOI SI project. To achieve this goal the design science research methodology is conductedthrough a series of steps. The analysis regarding the usability of BORO method for FOI to obtainsemantic interoperability in its project will be demonstrated as the result of this thesis, which can alsobe utilized as a reference for other military organizations when conducting activities of informationexchange.