第十三章、兵出子午(1 / 2)

汉魏文魁 赤军 0 字 2021-04-06

PS:抱歉,今天晚上去给老人做寿,更新晚了,请大家谅解。 </p>

后世即便只读过《三国演义》的人,可能不清楚傥骆道、褒斜道,甚至记不清散关故道,但一定不会忽视“子午谷”这个名字。 </p>

演义九十二回“赵子龙力斩五将诸葛亮智取三城”中说,诸葛亮议伐曹魏,会聚众将商议——“魏延上帐献策曰:‘夏侯楙乃膏粱子弟,懦弱无谋。延愿得精兵五千,取路出褒中,循秦岭以东,当子午谷而投北,不过十日,可到长安。夏侯楙若闻某骤至,必然弃城望横门邸阁而走。某却从东方而来,丞相可大驱士马自斜谷而进。如此行之,可咸阳以西,一举可定也。’” </p>

这就是后世褒贬不一的所谓“子午谷战略”,并非小说家编造,原事见于《三国志.魏延传》中裴疏所引《魏略》,其中魏延所献计策的具体细节略有不同—— </p>

“闻夏侯楙少,主婿也,怯而无谋。今假延精兵五千,负粮五千,直从褒中出,循秦岭而东,当子午而北,不过十日可到长安。楙闻延奄至,必乘船逃走。长安中惟有御史、京兆太守耳,横门邸阁与散民之谷足周食也。比东方相合聚,尚二十许日,而公从斜谷来,必足以达。如此,则一举而咸阳以西可定矣。” </p>

也就是说,魏延建议在诸葛亮兵出祁山的同时,由他率领五千精兵,身负必要口粮,通过子午谷奇袭关中。他判断长安城内无重将,夏侯楙不但不懂打仗,抑且胆怯,必然弃城而走。然后不管是否能够拿下长安,他魏延可以趁此混乱局面,在关中再周旋二十多天的时间。那么一个多月够长了,诸葛亮的主力必然已出祁山,跟他东西夹击,曹魏的关陇军团就有全军覆灭的危险。因此“则一举而咸阳以西可定矣”。 </p>

当时诸葛亮直接驳回了魏延的建议,“以为此悬危,不如安从坦道,可以平取陇右,十全必克而无虞”。他倒是也确实没有只走祁山一条道,而“扬声由斜谷道取郿,使赵云、邓芝为疑军,据箕谷”,以吸引和迷惑曹真所率的曹魏主力。然而赵云旋即为曹真击退。没能真正起到配合的效果,张郃又直接看破的诸葛亮所图,沿六盘山谷道西行,直取祁山侧面的要地街亭,最终导致一伐曹魏无功而返。 </p>

所以对于魏延那并没有正式实施的“子午谷战略”,后世众说纷纭,或以为真奇计也,惜乎武侯不用。或以为纯属异想天开,诸葛亮不肯听从非常正常。是勋本人在前一世。是比较倾向于魏延所谋的,关键点有三: </p>

一,魏延是蜀汉宿将,又长年镇守汉中,对于敌我态势和地理状况的理解,不是后人纸上谈兵所可以比拟的。说白了。倘若兵出子午谷十死无生,他除非疯了,否则没道理自陷死地。有人还拿后来曹真多道南侵,子午谷一路一个月还没走完一半儿来反对魏延,问题全都忽略了前面“道逢霖雨”四个字——魏延再傻。还不至于把俩月的路程给计算成十天。 </p>

二,诸葛亮初次北伐,时逢关陇空虚,曹魏专注南线东吴,对于蜀汉是等待其自生自灭,根本料想不到诸葛亮会大胆来攻。在此种前提下,突出奇兵很可能侥幸取胜——再说了,长安只有夏侯楙,那又是什么值得担心的对手了? </p>

三,从来军事行动没有必胜之策,冒险是难免的,尤其蜀汉以小博大,不冒险就无从获取最大的利益,无法彻底改变小大之势,成功的可能性非常渺茫。所以魏延之计虽然悬危,也不是完全不可以考虑,尤其他的目的只在于割断关中和虢洛的联系,以待诸葛亮上陇,并没有奢望仅靠这五千人就能取得完胜。 </p>

当然啦,以后事倒推,魏延的策略确实存在着一个难以弥补的漏洞,那就是:以诸葛亮的谨慎个性和和行军速度,一个多月也未必真能上陇,跟他东西对进…… </p>

关键就在于军事冒险是否必须,有没有一定的成功可能性。就如同后来邓艾偷渡阴平,其危险指数真不比“子午谷战略”来得低,可是他打赢了,于是千古传名。 </p>

基于以上理由,是勋会比同时代的谋臣武将更加关注子午谷方向,而且他认为蜀汉如今的局势比原本历史上诸葛亮北伐之时还要危险——一则曹魏已定江东、交广,二则南中尚且不稳——要是不敢冒险,他们就几乎没有翻盘的机会啦。而刘备的赌性又比诸葛亮强了不止一百倍…… </p>

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