1) Place in the map yourself as civilian
2) Place in the map several OPFOR soldiers and place in yours init this - [this,"WATCH","FULL"] call BIS_fnc_ambientAnimCombat;
3) run game and go in spectator mode, you will see that the red infantry will be shown with a blue icons.
4) you can place blufor units nearby, as soon as the red ones exit the ambient animation, their icons will remain hanging in the void, even if those exiting the ambient animation are killed