In February, Elon Musk shut off Russia’s internet access through Starlink, giving Ukraine an advantage on the battlefield. This move hindered Russian commanders’ ability to receive live video of the fighting and communicate with their troops. With limited drone threat, Ukrainian soldiers launched surprise attacks on Russian positions, gaining a strategic upper hand.
Source: https://www.wsj.com/world/europe/ukraine-is-suddenly-on-the-offensive-with-help-from-elon-musk-ea6ee661