Development of concepts for victory through exercises, simulations and force comparison is a continuously ongoing process in military organizations. A complementing method of contributing to concepts for victory can be made through systematic testing of existing theories which prescribes such concepts. This can provide knowledge regarding the validity of a theory and provide fundamental insights concerning which basic factors contributes to victory in naval combat. In this essay Wayne P. Hughes Six Cornerstones are tested through a qualitative case study of the battle of the Nile in 1798 and the Falklands campaign in 1982 to test its explanatory value for victory. The results show findings of the theory in both cases and larger deviations only occurred between two cornerstones. The largest deviations occurred between the cornerstones which contained specific descriptions for successful actions. The cornerstones which described success in a general manner and as desired effects were more applicable in the cases. This strengthens the fact that a recipe for specific actions in combat hardly can prescribe general success. The results also show that general descriptions can be viewed valuable for what it excludes, not for what it specifically prescribes. More research has to be done to say something further regarding the validity of the theory.