There is a growing awareness among researchers, policy-makers, and practitioners regarding the importance of increased coordination among numerous post-conflict peacebuilding processes and the consequent need for conceptual clarity as a precondition for coordinated, holistic peacebuilding interventions. Disarmament, demobilization, and reintegration (DDR), and Mine Action are among the very first entry points in post-conflict reconstruction, however, despite sharing similarities they form part of distinct communities of practice, and the nexus between the two remains widely unaddressed academically and in practice. This research aims to address this disconnection. A particular window of opportunity is identified through the difficulties that DDR reintegration generates.  In particular, this study proposes the reintegration of ex-combatants through mine action. The author suggests that DDR can only enable sustainable long-term results if it is part of a wider set of security promotion strategies with devoted attention to community security which is argued to be achieved through mine action. Using a qualitative single case idea analyses the research argues that the adoption of a bottom-up approach provides an alternative understanding of ex-combatant reintegration. The results suggest that Humanitarian Demining, Explosive Ordnance Risk Education (EORE) and Victim assistance (VA) can pave the way for reintegration and reconciliation between ex-combatants and local communities in the case of Colombia.