Figure 8-32.--Lapland fence.
laid out in lines 2 paces from the lines of the front and
TRESTLE APRON FENCE
rear fences, opposite and midpoint of spaces between
The trestle apron fence (fig. 8-3 1) has inclined
the long pickets. The second group installs front-row
pickets, returns to the head of the fence, installs the rear
crosspieces spaced at 15.7- to 19.7-foot intervals to
row, and then installs the anchor pickets. When the first
carry longitudinal wires on the enemy side. The rear
ends of the crosspieces are carried on triangular timber
group finishes laying out pickets, they begin installing
frames that are kept from spreading by tension wires on
wire and help finish installing the pickets.
the friendly side. The crosspiece maybe laid flat on the
ground for tying the longitudinal wires in place and then
raised into position on the triangular frames. The frames
are tied securely in place and held by the tension wires.
As the first task is completed, men move
The fence should be sited in such a way that it can be
individually to the head of the fence and are organized
guyed longitudinally to natural anchorages and racked
into teams of two or four men to install wires in the same
manner as for the 4-strand fence. The order of
installation is as shown in figure 8-30, except if front
guys are used, they are installed before the No. 1 wire;
rear guys after the No. 12 wire. The lengthwise wires of
Figure 8-32 shows the Lapland fence that can be
each 4-strand fence begin and end at an anchor picket.
used equally well on frozen or rocky ground and on bogs