This will move a unit to a random marker, and rotate it in the direction of that marker. Supports any number of markers.

ptg_pickMarker.sqf

//This will move a unit to a random marker, and rotate it in the direction of that marker. Supports any number of markers.

//Usage:
//null = [this, "mrk_1", "mrk_2", "mrk_3", "mrk_x"] execVM "ptg_pickMarker.sqf";

_unit = _this select 0;
_pick = (floor random ((count _this) - 1)) + 1;
_marker = _this select _pick;
_unit setPosATL getMarkerPos _marker;
_unit setDir markerDir _marker;