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Russia has reportedly been forming a strategic reserve from new recruits since July 2025. A Russian insider source that has consistently provided accurate reports about changes in the Russian military command stated on September 21 that roughly 292,000 people signed contracts with the Russian Ministry of Defense (MoD) between the start of 2025 and September 15—an average of approximately 7,900 recruits per week or 31,600 per month. The insider source stated that some of these recruits are joining the strategic reserve that Russia has been forming since early July 2025. The source did not specify how many recruits are going to the strategic reserve as opposed to the frontline in Ukraine.
The Russian military command may have assessed that Russia could afford to create a strategic reserve after Russian losses began to decrease in the summer of 2025. The Ukrainian General Staff reported that Russia suffered roughly 32,000 to 48,000 casualties per month between January and July 2025—more casualties than the average reported monthly recruitment rate. The Ukrainian General Staff reported that Russia suffered roughly 29,000 casualties in August 2025 and 13,000 casualties in the first half of September 2025—the only months so far in 2025 with casualty rates below the average reported recruitment rate. ISW recently assessed that Russian territorial gains were less costly in May to August 2025 compared to the spring of 2025, as Russian forces sustained a lower casualty rate per square kilometer seized. The reduced casualty rates in Summer 2025 may have convinced the Russian military command that Russia could afford to transfer some new recruits to a strategic reserve while still maintaining the tempo of offensive operations on the frontline in Ukraine. Changes in Russian tactics on the battlefield in the past few months likely contributed in part to the reduced casualty rates. Russian forces have been conducting assaults in smaller infantry groups and are increasingly employing small group infiltration tactics that seek to find and exploit weaknesses and holes in Ukraine’s undermanned defenses. The formation of the strategic reserve may indicate that the Russian military command assesses that Russian forces will be able to continue their current rate of advance using these small group tactics that allow the Russian command to deploy fewer personnel to the frontline.
Reports that Russia is creating a strategic reserve further indicate that the Kremlin is not interested in ending its war against Ukraine but remains committed to achieving its war goals on the battlefield and may be preparing for a conflict with the North Atlantic Treaty Organization (NATO). Russian President Vladimir Putin has repeatedly put forward a theory of victory that assumes that Russian forces will be able to make slow, creeping advances on the battlefield indefinitely, enabling Russia to win a war of attrition against Ukraine. The reported decision to create a strategic reserve and not deploy all new recruits to the frontline indicates that Putin and the Russian military command are content with the current rate of advance, even though Russian forces continue to only advance at a foot pace. The reported creation of a strategic reserve suggests that Russia plans to escalate offensive operations in Ukraine in the near-to-medium term rather than end the war. Russia may also be building out its strategic reserve as part of wider Kremlin preparations for a possible Russia-NATO conflict in the future, particularly as Russia intensifies its youth military-patriotic programs that aim to recruit Russian youth into the military in the years to come.
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