This paper analyzes the decisive role of military logistics in determining operational reach, strategic flexibility, and culmination points during the Russo-Ukrainian War (2022-2026). While popular history prioritizes tactical maneuvers and weapon systems, this study argues that the conflict’s trajectory has been structurally governed by the physical and organizational constraints of industrial sustainment. It contrast the Russian Federation's centralized, rail-bound "Push Doctrine" with Ukraine’s adaptive, decentralized "Pull Doctrine," exploring how both systems encountered distinct friction points, namely, the vulnerability of rigid supply nodes to long-range precision fires (HIMARS) versus the operational complexity of maintaining a "maintenance zoo" of multi-national Western equipment. Additionally, we examine the systemic impact of cyber-sabotage against rail networks (e.g., the Belarusian Cyber Partisans), the death of "last mile" transport due to the proliferation of First-Person View (FPV) drones, the macroeconomic strain on the global Defense Industrial Base (DIB), and the complete restructuring of medical evacuation (MEDEVAC) from air-superiority timelines to prolonged ground field care. Ultimately, the article reasserts that symmetric, high-intensity conflicts of attrition are fundamentally decided not by frontline combat power, but by the resilience, adaptability, and scaling capacity of the logistical tail.