This article explores the potential classification of decentralized armed groups in non-international armed conflicts (NIACs). Unlike centralized armed groups, decentralized groups consist of fluid alliances of small subunits or cells with loose coordination between them. The central question explored by the authors is whether such groups meet the minimum organizational criterion to be considered parties to an armed conflict under international humanitarian law (IHL). The authors argue that, while not possessing the same chain of command as centralized armed groups, decentralized armed groups can, under certain conditions, nevertheless fulfil the criteria for conflict classification. Judicial precedents and IHL interpretation point to this conclusion where the absence of a centralized command structure within the group can be compensated by the existence of other factors attesting to the group's organization, such as the exercise of operational command over armed subunits, with the intensity of violence being an additional element suggesting the overall organization of the group. Ultimately, this interpretation would ensure the applicability of a legal framework that would better reflect the intensity of armed confrontations on the ground, and bind both States and non-State parties to a NIAC alike.