《将苑·卷二·便利》
在草木茂密的地区作战可以采用游击战略；有浓密的山林地带作战可以用突击的办法，出敌不意；在平原作战没有任何隐蔽物的情况下，可以采用壕堑战术；在敌众我寡的情况下，我方应在黄昏时候攻击敌人；在我众敌寡的时候，则应在清晨向敌人进攻；如果武器装备精良，兵力强盛，则应速战速决；如果隔岸对峙，又有风沙，视线不清，就应采取前后夹击的战术。
夫草木丛集，利以游逸；重塞山林，利以不意；前林无隐，利以潜伏；以少击众，利以日莫；以众击寡，利以清晨；强弩长兵，利以捷次；逾渊隔水，风大暗昧，利以搏前击后。
In areas covered with dense bushes and grasses you can adopt guerrilla strategy; in areas with dense forests you can use surprise attacks to catch the enemy off guard; in plain areas without any cover, you can use trench tactics; when the enemy outnumbers you, your forces should attack the enemy at dusk; when you outnumber the enemy, your forces should attack the enemy at dawn; if your weapons and equipment are excellent and your troops are powerful, you should fight a decisive battle; if you are separated from each other by a river and there is wind and sand, so the vision is not clear, you should adopt an attack tactic of pincer movement.