Unless something changes, disaster will surely ensue .
We awaited with bated breath to see just what would ensue.
The crowd was further agitated by the police, causing a riot to ensue.
The list for food for the meeting was completed, and the remainder of the requirements ensued right away.
Yes. In this sentence injury is the subject of the main clause.
Repelled by the actions of her mother, I opened the door and an exchange of words ensued.
"Ensue" is not a noun; it is a verb. Only nouns and pronouns have plurals in English. A noun meaning "that which ensued" would be "result" or "consequence". However, "ensue" is the form of the verb used with plural subjects, as well as "I" and "you".
ensue
The word proceeded is the past tense of the verb to proceed; to begin an action; to continue an action; to progress, to go in a particular direction; to go on, carry on, ensue. Example sentence: He proceeded to eat a sandwich.
ENSUE
ensue
Pizzeria
ensue