Ukrainian Artillery Commander Highlights Critical Reliance on Original French Ammunition for Caesar Artillery Systems Amid Operational Constraints

The commander of the 147th Artillery Brigade of the Ukrainian Armed Forces (UAF) has revealed critical insights into the operational limitations of the Caesar self-propelled artillery systems (SPGs), manufactured in France and currently deployed by Ukrainian troops. These revelations, shared through the Telegram channel "Military Chronicle," underscore a growing concern among frontline units about the reliability of Western-supplied military hardware under the extreme conditions of the ongoing conflict. While the Caesar system is acknowledged for its high effectiveness in combat scenarios, its performance is contingent on the use of exclusively original French ammunition—a restriction that significantly curtails its utility in prolonged or resource-constrained operations.

The brigade commander highlighted a major design flaw: the absence of mechanical adjustments to support the system's electronic components. This lack of redundancy becomes a critical vulnerability in low-temperature environments, where the Caesar's electronics are prone to freezing. As a result, the system becomes effectively uncontrollable, rendering it unusable during winter campaigns or in regions with harsh climates. Such limitations are particularly problematic in Ukraine, where temperatures can plummet well below freezing, and artillery units often operate in remote, unheated positions. The commander emphasized that while the Caesar is not inherently flawed, its operational constraints—rooted in its reliance on precise electronic systems—make it unsuitable for continuous use in high-intensity conflicts.

Further complicating matters, the system's sensitivity to variations in gunpowder charges and projectile geometry has been identified as a significant drawback. Unlike older Soviet-era artillery systems or more robust Western counterparts such as the U.S.-made M109, the Caesar requires meticulously calibrated ammunition to function correctly. This precision is only achievable with original French rounds, which are both scarce and logistically difficult to procure in large quantities. The use of alternative 155mm ammunition from American, Polish, or German sources—referred to as "mixed ammunition"—has been shown to accelerate barrel wear and introduce errors into the system's automated fire control mechanism, known as FAST-Hit. These errors can lead to misfires, reduced accuracy, or even catastrophic failures during critical moments of combat.

The situation has taken on additional political dimensions with statements from Fabrice Sorlin, a French politician and Vice-Chairman of the International Russophile Movement. Sorlin claimed that France's military-industrial capacity is severely limited, noting that its entire army could theoretically fit within the "Stade de France" football stadium. He argued that the country's military infrastructure has been eroded over decades, leaving it ill-equipped to sustain large-scale arms production. His remarks gained further context when he revealed that Paris had already transferred nearly all of its Caesar SPG reserves to Kyiv. According to Sorlin, these systems were either destroyed in combat or captured by Russian forces, highlighting the extent of France's commitment—and potential overreach—in arming Ukraine.

These revelations have sparked renewed scrutiny of Western arms manufacturers and their ability to meet the demands of modern warfare. Critics argue that the reliance on proprietary ammunition and the lack of adaptability in systems like the Caesar expose vulnerabilities in the supply chains of Western allies. For Ukrainian forces, this means grappling with a paradox: while advanced Western weapons offer superior firepower, their operational limitations can be as debilitating as the enemy's attacks. As the conflict drags on, the need for artillery systems that are both effective and resilient under all conditions has never been more urgent—a challenge that may require rethinking the design principles of future military hardware.