How Ukraine’s Adaptive Warfare Strategy Is Shifting the War Against Russia

Ukrainian servicemen of the 33rd Separate Assault Regiment train at an undisclosed location in the Zaporizhzhia region on January 30, 2026. (Photo by Tetiana Dzhafarova / AFP via Getty Images)

Something important is happening on the battlefields of Eastern Europe. Quietly and steadily, without much fanfare, Ukraine is beginning to reverse the strategic geometry of its war against Russian aggression.

There are many reasons why Ukraine has regained the strategic initiative, but they all come down to the same principle: adaptation. Military leaders have always spent enormous effort thinking about how to outmaneuver opponents and gain an advantage, because warfare is never static. One side always falters or becomes complacent, which allows the other side to adjust. Every battlefield evolves, every new technology creates both opportunities and risks, and every enemy at some point presents vulnerabilities. Successful commanders are usually those who can recognize changing conditions fastest, discard outdated assumptions, and adapt before the enemy does—in small and big ways.

Lessons from Iraq: The Power of Adaptive Mindsets

During my time commanding in Iraq, we learned that even the phrases we used needed to evolve. Early in the war, we borrowed the mantra of “winning hearts and minds” from earlier insurgent wars. But we realized Iraqis didn’t want Vietnam-era slogans, and they certainly didn’t want to be like us; instead they wanted security, reliability, and partnership. We shifted our thinking toward “gaining trust and confidence” with both Iraqi soldiers and civilians, and we showed it by fighting alongside them rather than merely operating around them. It was an adaptation—not just in tactics, but in mindset, language, and operational approach.

That wasn’t the only adaptation American forces were forced to make in Iraq. Insurgent networks rapidly adapted to American strengths by using decentralized attacks, roadside bombs, and information operations designed to undermine public support and operational momentum. The initial American responses lagged behind the evolving threat—in some cases, for years. Eventually, however, U.S. commanders and soldiers adjusted by more closely integrating intelligence with operations, employing counter-IED technologies, adopting decentralized operations, employing electronic warfare, and forging closer partnerships with local forces. Success came because American forces eventually learned faster than the enemy.

Historical Examples of Adaptive Warfare

Military history offers plenty more examples of small, adaptive forces overcoming larger, slower ones.

• After the Tet Offensive in 1968—which was an abject military failure for the North Vietnamese and effectively extinguished the Viet Cong as a fighting force—the North Vietnamese decided not to try to engage the United States military in pitched battles, resorting instead to guerilla tactics.
• During the Winter War of 1939–1940, the Finns used winter camouflage, ski-based mobility, and improvised weapons like Molotov cocktails to fight the massive Red Army to a draw and defend Finnish independence.
• In World War II, the Germans used “blitzkrieg”—super-fast maneuvers of relatively small, armored units well in advance of the still horse-drawn main force—to conquer Poland, the Low Countries, and France. The Soviet Union adapted by trading space for time, allowing the German momentum to stall out as winter began.

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Ukraine’s Adaptation in the War Against Russia

Ukraine’s ability to adapt has been a critical factor in its fight against Russian aggression. Military leaders have discarded outdated tactics, embraced new technologies, and outmaneuvered Russian forces by responding faster to evolving battlefield conditions. This relentless adaptation has allowed Ukraine to regain the strategic initiative and turn the tide in key areas of the conflict.