In the United States, there are many cemeteries specifically devoted to veterans, maintained by the military, such as Arlington Cemetery[?]. Most have various rules regarding what must take place in order to be interred there.
The following are the religious emblems available for gravestones.
... one finds the "rolling" point, but the gyro will also be accelerated to a smaller extent by the slipping friction.
The device is covered by US patents 3,726,146 ...