The Sword Against the Stars by A. F. Hall1 (New Worlds #159, February 1966) begins pretty much as it goes on:
Dated the 42nd year of our exile
The earth this year is death and stinking rubble, a pall of broken glass and rusted, empty cans. The earth this year is a thousand blasted cities, bleak and broken skylines, skeletons of buildings connected with crazy paving. There are some parts of our city which still burn with sporadic fires; a water main bursts and somewhere a stray dog howls. The earth this year is scarred and seared to wasteland, a planetary ghetto where all that’s left is dying, crawling to its slow, inevitable ending. The earth this year is sick of a million plagues, gaunt famines and a mad child’s crying. p. 101
This initially appears to be a post-nuclear holocaust tale but we later discover that the devastation is the result of an alien invasion. The rest of the story is mostly description, and there is very little incident: a “dust priest” turns up at the narrator’s settlement; the group go scavenging in a city; the narrator finds a sword (which prompts much speculation about why there are red jewels in the handle):
The seven rubies must represent the stars—but why are the stars red? The sun is made of gold and the moon is silver but the stars glow with an angry light. When I was very young I used to think that the stars were white diamonds scattered on black velvet, I would have made the stars out of diamonds if the sword had been mine. It was only the forger of the sword who knew better, he must have known that the stars were hostile and he set seven red stones in his sword, red for the colour of war. He chose red stones so that those who came after him should remember when they saw his warning—but we who came after, we forgot. How did he know? p. 109
Although the description is well enough done, there is far too much of it: this makes for a dull piece.
* (Mediocre). 4,200 words.
1. This is Hall’s only SF story, according to ISFDB.