Ukrainian special operators are changing how they assault enemy trenches. Someone always has to 'watch the sky.'

Fuente: Business Insider

Ukraine's elite troops keep a close watch on the sky as they clear trenches. Yevhen Titov/Global Images Ukraine via Getty ImagesUkrainian special operators are training to keep a close watch on the sky when they clear trenches. The rise of drones on the battlefield has forced these elite troops to adopt new training methods.