分險

King Wu asked Taigong: "If we lead our army deep into hostile territory and encounter the enemy amid difficult terrain — we have mountains on our left and water on our right, the enemy has mountains on their right and water on their left, and we hold opposite sides of the hazardous ground in confrontation — if I wish to make our defense solid and ensure victory in battle, what should be done?" Taigong said: "When holding the left side of the mountain, urgently prepare the right side. When holding the right side, urgently prepare the left. If the hazardous terrain includes deep water and there are no boats, use Heaven's Pool pontoons to ferry the three armies across. Once across, immediately widen our paths to facilitate combat. Use Martial Assault wagons as front and rear guard, deploying powerful crossbows so all formations are secure. Block intersecting roads and valley mouths with Martial Assault wagons. Raise banners high — this is called a military fortress."

"The method of fighting on difficult terrain: use Martial Assault wagons as the vanguard, Great Shields as the guard force, and elite crossbowmen flanking left and right. Group three thousand men into one garrison, with assault formations at each station and troops deployed where convenient. The left army advances on the left, the right army on the right, the center army through the center — all attacking forward simultaneously. Those who have finished fighting return to their garrison to rest, alternating between combat and recovery. Continue until victory is achieved." King Wu said: "Excellent!"