决定胜负于千里之外。形容将帅谋划得当，指挥若定to make a good plan; to gain a decisive victory from a thousand miles away

• 运筹帷幄之中决胜千里之外，万人对战一触即发。

  Devising plans in the commander's tent and wining a battle more than a thousand miles away; a battle of tens of thousands of men is imminent.