Russian military doctrine identifies “anti-transport” and “anti-facility” charges and mines as specialized munitions distinct from standard anti-vehicle or anti-tank systems. These devices are designed for use by combat engineering and special-purpose units during sabotage and demolition missions, including dedicated charges intended for train derailment or the disruption of critical railroad supply routes.
In November 2023, an MS-4 demolition firing device was documented by Ukrainian forces. The device featured an anti-handling configuration incorporating a vibration-based mechanism. More recently, in January 2026, detailed technical material was circulated documenting and analyzing the MZU-S system – a purpose-built anti-railroad charge equipped with a specialized initiation system primarily intended for targeting trains.
These systems typically incorporate advanced, multi-functional fuzes and initiation assemblies integrating magnetic and seismic sensors, as well as electrochemical time-delay arming and firing mechanisms.
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