This poem shows that even when empires fall, God remains. This stanza especially, shows this relationship:
"The tumult and the shouting dies;
The Captains and the Kings depart:
Still stands Thine ancient sacrifice,
An humble and a contrite heart.
Lord God of Hosts, be with us yet,
Lest we forget—lest we forget!"
It shows that a war has ended (the shouting has died) and that the empire has left (the captain and the Kings depart) but that God is still present (Still stands Thine ancient sacrifice etc). We know he is referring to God here, because "Thine" is with a capital T which represents something holy.
Sub-questions are narrower questions. They are important because they provide the 'skeleton' around which you will find information to answer your main research question.
The decided to not care who the winner is.
I really hoped this helped you, and have a great day :)
Stay safe as well.
Protruded-extended
Haunt - place frequented Proximity - nearness
treacherous - Precarious