官渡一役,曹操以少胜多,以弱胜强,奠定了一统北方的根基。纵观官渡始末,我们就会看到曹操在作战中,始终贯彻着这样一个战略思想:即避免两线作战,打破袁绍钳形攻击,形成一个稳定的后方。 官渡战前,曹操拥据的兖豫二州是个四战之地,北有袁绍,南有刘表、张绣,东有吕布,东 Guandu battle, Cao Cao to win less, to weak strong, laid the foundation of a unified north. Throughout the whole period of Guandu, we will see that Cao Cao has consistently implemented such a strategic concept in his operations that he should avoid the two-line operation and break the claw attack by Yuan Shao and form a stable rear. Guandu war, Cao Cao, according to Yanzhou Yu two states is a land of four wars, north of Yuan Shao, the South has Liu Biao, Zhang embroidery, east of Lu Bu, East