_unit disableAI "FSM";
_unit disableAI "AUTOTARGET";

Will make the unit follow the waypoint even when taking fire. He wont stop but he might use some smoke in an attempt to stay alive.

I agree such a waypoint would be really nice, but as a sort of half measure I offer this.

_grp setBehaviour "CARELESS";
_grp allowFleeing 0;

_wp setWaypointType "SAD";
_wp setWaypointSpeed "FULL";
_wp setWaypointBehaviour "COMBAT";

_unit setUnitPos "UP";

Where _grp is the group, _wp is the waypoint and _unit setUnitPos "UP"; is done for every unit in the group.

I have a mission based on being able to do this. It used to work but now it doesn't. So it's something that a patch broke.

Fixed on main branch as of 2014-03-05

Fixed on main branch as of 2014-03-05

division by zero is not infinity it's mathematically undefined.