Technology evolves quickly in the armed forces, however the quick progression and development in warfare is hindered when the war studies and tactics fall behind. This is apparent when examining the Swedish artillery system Archer. Even if “Archer” has the capability to shoot and use a high course trajectory, the tactics still focus on the traditional low course trajectory. A quantative study based on the principles of war (fire, movement and protection), examines if the high or low course trajectories are the most effective in an urban environment. Both the low and the high course trajectory has their own advantages however, in this study, the high course trajectory proves to be the most effective. This entails that the artillery tactics regarding the Archer needs to be examined and developed to match the technological advances.