Russian forces are "digging in a First World War-style trench system" in Kherson, says the former British army chief, who has alarmed the Ukrainian forces as they are still in Russia's artillery range. Trench warfare seems to be Putin's new strategy to regain control as the winter sets in. The First World War-style trenches, which are typically zigzag in shape, will help Russian troops to withstand artillery bombardment and minimise losses in the harsh temperatures. Watch this video to understand everything about trench warfare.
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