Footage released by Ukrainian forces captures their engineers and sappers emplacing a minefield near the front-line with Russian troops. They come under fire while emplacing the mines.

Believe it or not, landmines are still not against the rules of war. This video, released by Ukraine's 80th Separate Airborne Assault Brigade, shows sappers and engineers emplacing a minefield near the front lines. In the process, they come under both direct fire and artillery fire from Russian forces, but continue to emplace the beginnings of a defense-in-depth that will prevent Russian forces from continuing their advance along the Eastern Front.