500
8 Guidelines in clearing fields of fire
Do not disclose squads fighting position, start clearing near fighting position out, leave thin natural screen of foliage, light wooded areas; remove lower branches of scattered tree's, heavy wooded areas; work to thin undergrowth and removing lower braches of tree's (clear lane of fire for AW); demolish bldg.'s which may hide enemy's; move cut brush so cannot be used by enemy, clear obstructions to avoid premature detonation of M203 projectiles