Analysis of The grand cortège of glory and youth is gone

The grand cortège of glory and youth is gone
flaunt standards, and the flood of brazen tone:
I alone linger, a regretful guest,
here where the hostelry has crumbled down,
emptied of warmth and life, and the little town
lies cold and ruin'd, all its bravery done,
wind-blown, wind-blown, where not even dust may rest.
No cymbal-clash warms the chill air: the way
lies stretch'd beneath a slanting afternoon,
the which no piled pyres of the slaughter'd sun,
no silver sheen of eve shall follow: Day,
ta'en at the throat and choked, in the huge slum
o' the common world, shall fall across the coast,
yellow and bloodless, not a wound to boast.
But if this bare-blown waste refuse me home
and if the skies wither my vesper-flight,
'twere well to creep, or ever livid night
wrap the disquiet earth in horror, back
where the old church stands on our morning's track,
and in the iron-entrellis'd choir, among
rust tombs and blazons, where an isle of light
is bosom'd in the friendly gloom, devise
proud anthems in a long forgotten tongue:
so cozening youth's despair o'er joy that dies.