31 December 2025

Ukraine's trench war runs on an easily overlooked weapon: grenades

Sinéad Baker

Grenades are an easily overlooked weapon that is key in Ukraine.
They're vital in close-quarters trench combat and are being dropped by drones.
A US veteran who fought in Ukraine said grenades are "your best fucking friends."

Grenades — a standard but often unglamorous part of modern infantry combat — have become indispensable in Ukraine's close-quarters and grueling fight against Russia's invasion.

The war blends advanced technologies like drones and electronic warfare with grinding, World War I-style fighting, where soldiers sometimes battle at arm's length in muddy trenches and bunkers. In those confined spaces, Ukrainian and Russian troops alike rely heavily on grenades.

Western officials and war veterans in Ukraine told Business Insider about the important role they play in Ukraine's trench warfare. Their use has also evolved, with grenades increasingly getting tactical upgrades, including adaptations for drone drops and components made with 3D printing.

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