the vicinity of the vehicle. In any type of defense the driver should be trained to defend his vehicle in this manner.
(m) Perimeter defense (fig. 8) is executed by having combat groups occupy previously selected defensive positions in the direction from which the attack threatens. Drivers remain near their vehicles in order to defend them. The defensive positions are selected along the perimeter in order to provide all- around defense of the train bivouac and should be mutually supporting.
(6) (a) Daylight attacks of which advance warn- ing has been given can, in many instances, best be repulsed by using the perimeter defense referred to above.
(b) Night attacks and daylight surprise attacks can, in most instances, best be repulsed by using the individual and vehicular defense referred to above.
(7) Standing operating procedure for the close- in defense of the train bivouac, which is within the capabilities of the troops available at that installa- tion, should include those means and methods dis- cussed in (5) above which are applicable to most situations. Such standing operating procedure is then the basis for the complete plan for close-in defense of the train bivouac in each particular situ- ation.