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原创 秦始皇为何修建长城来被动防御匈奴,而不像汉武帝那样主动 ...
很显然,秦朝没有足够的骑兵出击,况且在茫茫草原之上,秦兵完全不熟悉地形,也没有在草原上大规模作战的经验,哪怕是李牧对付匈奴,也只是诱敌深入之计,同样没有深入草原,深入草原作战在当时是一种风险极大的事。
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