Lox. What soldiers? What testimonies?
Don, I share your disgust at the attacks on mostly young conscripts who were just trying to do their best for everyone.
I know a veteran in the Hertford branch of my Regimental Association.

It was cruel, unjustified and a betrayal, but let us save the word "terrorism" for those cowardly murderers who attack helpless civilians for some political objective..

The smoke was dispensed from air-burst shells.
It would not penetrate roofs or walls.
In the video it can be seen bouncing off roofs.