Such devices are easily sabotaged, and damage to them can pose a
serious hazard to moving trains safely.
Four methods of train operation aid in
difficulties encountered immediately upon entry into a theater.
Careful plans should be made in determining the proper method for
early railway operations; any one or a combination of methods may be
The four methods of train operation are fleet, manual block,
train order, and timetable. They are discussed in that order in the
four main paragraphs that follow; important points about the four
methods are summarized in table II which follows paragraph 3.8.
3.5. FLEET OPERATION
rehabilitated or constructed, the fleet operation is used.
primary advantage of this method is its simplicity.
move forward for specific periods, normally 4, 8, 12, or 24 hours.
At the end of the designated period, empty trains return toward rear
areas for a corresponding period.
Figure 3.1 shows a railway
that the forward area of the
combat zone is just forward of
railhead A, and the remainder of
the railway north of it is in
The theater has
not yet expanded far enough to
and the sidings at stations X
and Y are not usable. A single-
track railway runs from the port
Locomotives and railway cars are
Railhead A can accommodate four
trains at one time.
Four trains are sent out at
1-hour intervals from the port
Figure 3.1. Railway
time for each train and 10
at the railhead.