In an ever-changing world an armed force needs to adapt and learn from its mistakes. To do this it needs to have a working lessons-learned process and the Swedish army is in the developing phase of such a process. But how does it hold up against previous lessons-learned processes and what can be learned from these? The essay investigates the Swedish lessons-learned process used during its ISAF contingents between 2009-2013 and compare it to the process the Swedish army is developing today with the help of Dysons model for lessons-learned processes. The essay finds that, while some improvements have been achieved, there are certain factors that still needs to improve. Most importantly the understanding of what a lesson learned is and how to use it needs to be improved. This will help the organization in the other areas, such as knowledge management, dissemination, and transformation. Another area in need of development is the knowledge management IT-system. The study finds that further studies needs to be done in knowledge transformation within the organization. Further studies also need to be done regarding how the organization handles the lessons learned process in the units.