Thinking of a Friend Lost in the Tibetan War

Last year you went with your troops to Tibet;
And when your men had vanished beyond the city-wall,
News was cut off between the two worlds
As between the living and the dead.
No one has come upon a faithful horse guarding
A crumpled tent or torn flag, or any trace of you.
If only I knew, I might serve you in the temple,
Instead of these tears toward the far sky.