D2.4 illustrates the material flows of aid deliveries, both when it comes to assets, and to staff. Importantly, it goes to show how many organisations may be involved in a delivery, from material suppliers, to third party logistics service providers, co-operation and implementation partners, as well as providers of various other services (distribution, monitoring and evaluation, information etc.). This myriad of organisations involved makes tracking and tracing particularly challenging, and the more so when talking about conflict zones. The data of D2.4 extends to the various facettes of humanitarian aid operations in conflict zones, not just in the different options of own convoys vs. third parties, but also, in terms of simple, one road environments – that significantly simplify not just routing but also tracking – to technically challenging demilitarised zones. Altogether, D2.4 therefore provides an overview of humanitarian logistics in conflict zones.