Today, I am posting my rendition of a little poem by Du Fu on the achievements and regrets of Zhuge 諸葛 Liang 亮 who should be no stranger to those of you familiar with Chinese history. My notes may help a bit, at least insofar as the Battle Formation is concerned. Postscript (7 October 2016): Thanks to Ray Heaton, I can now give you a wiki link to an alternative interpretation of the Battle Formation as a defensive construct (kind of fortress?) translated as "Stone Sentinel Maze" and another link to Chapter 84 of the Luo Guanzhong historical novel "Romance of the Three Kingdoms" translated by C.H. Brewitt-Taylor.
The big picture, Shu should have allied with Wu to counter Wei, the strongest of the three. The King of Shu Liu Bei decided, probably against Zhuge's advice, to attack Wu, but failed, leading to the ultimate demise of Shu.
No more history. Please sit back and enjoy the poem.
4th September 2013 (revised 9.9.13; 11.9.13; 12.9.16; 27.9.16)
Translated from the original -杜甫: 八陣圖