During a Standard Random battle, I lost HP before the end of the Countdown.
There was an Artillery Strike right at the start of the countdown (-30 sec) in random battles ! Starting the battle with hundreds of HP less than supposed… (and the ally Sheridan even more)
We did not see the strike during the live battle, just the lack of HP.
I've done a post in the WoT forum explaining in details :
Has anyone experienced it ? or knew it was possible ?