Who died on the wires, and hung there, one of two –
Who for his hours of life had chattered through
Infinite lovely chatter of Bucks accent;
Yet faced unbroken wires; stepped over, and went,
The poem begins ungrammatically, so that the reader has to fill in the beginning of the sentence. This could read “… it was the officer who died on the wires, and hung there, one of two”. The reader may feel they are entering in the midst of a conversation, an example of  in medias res , literally in Latin “in the middle of things” 
 That the dead man was “one of two” sets up alternatives; what is the wisest course of action? To go forward with foolhardy bravery and be killed, or to preserve oneself? The poet doesn’t judge either or provide an answer.
The Silent One