The other poster who noted that it looks like a video game, apparently removed, or had his post removed. You realize that what you're looking at is actually a video game, right?
The video game is Arma3, and the link is to a channel showing shorts, or brief snippets from someone playing the video game.
It's not real.
The self-description of that youtube channel states:
Arma 3 is an open-world, realism-based, military tactical shooter video game developed and published by Bohemia Interactive exclusively through the Steam distribution platform. It was released for Microsoft Windows in September 2013, and later announced for macOS and Linux in August 2015. Arma 3 mainly takes place in the mid-2030s, on the fictional islands of Altis and Stratis in the South Mediterranean Sea, and the South Pacific island of Tanoa, as well as the island of Malden and a landlocked terrain set in the historical region of Livonia in the Suwałki Gap between Poland and Lithuania. The islands feature photo-realistic terrain and water environments. Altis is the largest official terrain in the Arma series with ground area covering approximately 270 square kilometres. The smaller island, Stratis, expands over an area of 20 square kilometres. The single-player campaign has the player take control of U... This channel was generated automatically by YouTube's video discovery system.
https://www.youtube.com/channel/UCNs...-vVSXEyA/about