This document describes the activities, commissioned by the Swedish Armed Forces, within the project "Vapensystemvärdering" (Weapon System Assessment) for the year 2015. The activities have been divided into four areas important for supporting the Swedish Armed Forces with competence to assess weapon systems. These areas are covering research trends, assessments, development of models and tools, quality assurance. Other related activities are reported as well. During 2013 a number of activities related to assessment of ground based air defense were initiated. These activities have been continued since then, in parallel with a few activities related to exterior ballistics.