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The engineers of the 91st Brigade work in rain, in snow, under enemy drone surveillance — pausing twice during a single hour-long visit by ArmyInform journalists, once for an FPV drone passing close by, once for a Shahed intercepted almost directly overhead.
Their work is invisible in the way that foundations are invisible. Nobody photographs the obstacle belt after a Russian infantry assault fails. Nobody counts the Shaheds that hit an anti-drone net instead of a truck.
But the kill zone that slows enemy infantry for 90 seconds — those are the 90 seconds in which a Ukrainian drone operator acquires the target and fires.
The fortification that absorbs a 152mm direct hit — that is the shelter that returns a soldier to his position the next morning.
The anti-drone net that catches a Shahed on a metal support — that is the truck, the driver, and the ammunition load that reach the front line.
Modern warfare is decided in the air. It is sustained on the ground.
Ukraine's engineers are building both.
Source: Oleksandr Marchenko ArmyInform, June 16, 2026
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