It has been reported that the Germans sometimes mark their minefields
by placing wooden stakes at the corners. This method of marking is one of the
standard methods used by the Germans. Some of these stakes have been found
marked "HP".
The Germans designate certain "fixed points" (FP - Festpunkt) and
certain "auxiliary points" (HP - Hilfspunkt). The position of each mine can be
found by measuring a certain distance, in meters, in a straight line from any one
of such points along a given bearing. A compass card called Marschkompass
(see Tactical and Technical Trends No. 34, p. 22) is used. This card has a compass
divided into 64 divisions, NOT 360 degrees, numbered in a counterclockwise
direction. The number of FPs and HPs chosen to start with, and the proportion
of HPs to each FP seems to be arbitrary. Sometimes bearings to mines are given
from both a FP and a HP, or from two different FPs, but this is the exception;
normally only one bearing is given.