Could Small Drones Really Replace Artillery?

Threat in the sky: How cheap drones are changing warfare - Bulletin of the Atomic Scientists

The changing face of modern warfare: How 'cheap' drones are moving the Ukraine war from the trenches to city skyscrapers - and could be pivotal in Kyiv's fight to defeat Putin

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Unmanned combat aerial vehicle - Wikipedia

Are drones about to replace traditional ground units the way guns have replaced swords? - Quora