Due to advances in the conceptual understanding of organisational learning, armed forces tend to establish more permanent systems of formal learning than earlier, enhancing their ability to undergo military change. Striving towards inter-organisational emulation interoperability, meaning that systems are able to interact with each other, has become a necessity. Yet, such a quality is not embedded in the wide variety of theories on the subject, nor explicitly taken into account in the Swedish armed forces Lessons Learned handbook. By examining doctrines of NATO and the Swedish Armed Forces, comparing their approach towards organisational learning capabilities identified by Max Visser, this study aims to describe how the two can be understood as interoperable in the context of Lessons Learned. Additionally, by combining Visser’s theory with that of John R. Deni, providing degrees of interoperability efficiency, the study also serves to provide an analytical framework suitable for further evaluation of systems alike. The result shows that the Lessons Learned procedure of the Swedish armed forces can be considered as interchangeable with that of NATO in three out of four dimensions, leaving human resource management and development as room for improvement.