Yeah true, I have found out for you and now let me explain these two terms.
“Utterly deserted, shallow bare fields, black and sodden.”
This line illustrates war theme, like during or after a battlefield it is bare and deserted since whole life is destroyed.
Horse: Horse represents nature and also inner world of the man, who is at constant war with himself.
Clothes: Clothes symbolize worries of man and his physical outlook.