As a long-term researcher and active participant in the rescue and humanitarian international aid coordination action, the author undertakes the analysis of changes that have occurred since the inception of the legal basis and international crisis coordination structures, focusing on the increasing role of the European Union Civil Protection Mechanism. The material contains not only the analysis of normative documents and a comprehensive description of the pillars of European civil protection but also practical examples of the European mechanism’s increasing involvement in actions outside the Union over two decades and during the COVID-19 pandemic. The article contains examples of material and hardware-based humanitarian aid implemented for Ukraine and a comprehensive systemic approach to Polish civil protection represented by the State Fire Service in preparation for Ukrainian representatives to be familiar with the European Civil Protection mechanism. Numerous examples of activating the mechanism from the Polish perspective are shown both from the perspective of the aid recipient (fire in Biebrza National Park in 2020) and the donor (Lebanon blast in 2020, earthquake in Nepal 2015, forest fires in France 2022 or support to Ukraine).