In planning their training for jungle warfare, the Japanese have been conscious of the great
varieties of the jungle country of East Asia and the southwest Pacific area. The following
points on jungle warfare taken from Japanese sources emphasize certain methods of jungle
warfare apparently tested by Japanese experience.
* * *
a. The Advance
Leave some distance between the leading unit and the main body, and distribute liaison
men between units; although it is best to relieve the unit each day, the officer commanding
the leading unit should not be changed.
The above diagram reproduced from a Japanese diary had the caption, "Suggested Formation for a
Company Advancing through Jungle."
It is essential for the leading unit to include in the regular reports to the
commanding officer in the rear, the condition of the trail and the type of country.
As there are clearings in the jungle, the commanding officer must advance his units by
bounds and rushes from one area to another. Camouflage of each man and each gun must be
complete. When crossing a grassy plain, cover everything with grass. If enemy planes
appear while you are in a clearing, lie still. Generally, riflemen must support the
heavy weapons. The minimum is one rifle platoon for a machine-gun company and
one for the battalion gun platoon.
When bivouacking in the jungle, cooking should be done in several places, well
away from the bivouac area. All fires should be extinguished immediately after
cooking. During the advance, communication will be by telephone and runner. Radio
will not be used. The rate of advance will be regulated by that of the heavy
weapons. The distance covered in a day will usually be between 3 to 5 miles.
b. The Attack
When selecting assembly areas for the attack, try to disperse units, and choose places
which are naturally camouflaged. The concentration of the main force at the assembly
point for the attack, must be made at night. If enemy artillery fire is encountered, it
is important that this be neutralized before units take up their positions. Attacking units
will move to the edge of the forest during darkness, crawling if necessary. On signal, they
will rush the enemy positions. As it is best for each flank unit to make a rush at the
same time, the time of the attack should be coordinated.