Mosaic Warfare In Ukraine - The Defence Horizon Journal ▲

Mosaic Warfare In Ukraine

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April 2, 2026

Abstract: Mosaic Warfare is often seen as a far-future concept linked to further breakthroughs in emerging disruptive technologies. This article argues that the war in Ukraine challenges that view. Although Ukraine does not explicitly use the term, its battlefield adaptation reflects core mosaic principles, including distributed low-cost uncrewed systems, adaptive kill webs, decentralised decision-making, and rapid sensor-to-shooter integration. The article shows that Mosaic Warfare is not merely a speculative future vision, but an increasingly useful lens for understanding military success and effectiveness in contemporary warfare. At the same time, the Ukrainian case suggests a changing character of warfare in which operational advantage depends increasingly on adaptability, distributed force employment, and the rapid integration of sensors, decision-makers, and shooters, while also exposing current limits in interoperability, communications resilience, sustainment, and organisational scaling.

Problem statement: How does the war in Ukraine challenge the widespread misunderstanding of Mosaic Warfare as a distant or overly futuristic concept by showing that its core principles are already being implemented in contemporary warfare?

So what?: Western militaries, defence planners, and procurement organisations should stop treating Mosaic Warfare as a distant future concept and start drawing practical lessons from Ukraine now. Even if Ukrainian forces do not use the term directly, their battlefield success is closely tied to core mosaic principles, especially the integration of distributed uncrewed systems, software-enabled kill webs, delegated initiative, and rapid adaptation. The key conceptual shift is therefore away from platform-centric force design and toward modular, attritable, interoperable, and quickly recomposable capabilities. This requires corresponding changes in doctrine, procurement, training, digital integration, and sustainment.

Source: shutterstock.com/metamorworks

Introduction

The Russian full-scale invasion of Ukraine in February 2022 has produced the most extensive large-scale interstate war in Europe since the Second World War and has provided an unprecedented empirical environment for observing the evolution of contemporary warfare. Among the most striking developments has been the rapid battlefield diffusion of distributed uncrewed systems, digital integration platforms, and decentralised decision-making practices. While these developments are often analysed separately as elements of “drone warfare,” networked operations, or battlefield innovation, this article argues that they can be more coherently understood through the conceptual lens of Mosaic Warfare. Although Ukraine does not explicitly use the term, many of its battlefield practices reflect core mosaic principles: distributed low-cost systems,