Geshu Han, 哥舒 翰, (died December 1, 757)
The cited poem is about General Genshu Han and written by an anonymous soldier.
In 756, Genshu Han was given the responsibility for defending Tong Pass against the rebel forces of General An Lushan. He was among 30 Tang generals captured and executed by rebel forces.
Geshu’s son Geshu Yao (哥舒曜) was also a Tang general and it is possible that he, in some way, had a hand in the writing of the poem as a memoriam.
100 Tang Poems 