This article analyzes four war-themed exhibitions in Ukraine’s two leading national museums and studies their role in documenting, interpreting, and exhibiting the Russo-Ukrainian war. This research intends to prove that since Russia’s full-scale invasion of Ukraine in 2022, museums have been conceptualizing the war through narratives of suffering and sacrifice, grounding tangible historical authenticity through the display of items such as war trophies and personal belongings. The narrative of suffering tends to be based on the opposition of “we” and “they,” where “we” focuses on civilian torment and resurrection as the main metaphor of physical and spiritual survival, and “they” are predominantly depicted as the military enemy, creating strong anti-Russian and anti-Soviet tendencies. The martyrdom narrative of sacrifice focuses on Ukraine’s (fallen) defenders, whose image is created by deep personalization, nationalization, and heroization. This article argues that musealization of the Russo-Ukrainian war exemplifies and represents “warring memory,” which is predetermined and justified by active engagement in an ongoing war while performing the functions of testimony, resilience, and mourning.