Ukrainian troops attempting to break through pro-Russian separatist lines are forced to run through a gauntlet of enemy fire in mostly open terrain. The source information for the video is uncertain, but may likely be an event that took place in 2014.
It's not clear from the footage if the troops were advancing or retreating, but the footage shows a few vehicles that were struck by enemy fire and disabled. Infantry troops ride on top of armored vehicles and cling to the side of trucks. At one point, the cameraman's element becomes the target of accurate enemy high explosive rounds and they halt and take cover behind the infantry fighting vehicle.
Later in the video, a line of grass fires parallels their route, which was probably started intentionally to provide a smoke concealment screen to cover their movement.