Anaphora
Repetition of the same word or phrase at the start of successive sentences or lines, creating a hammering effect.
Anaphora repeats the same word or group of words at the beginning of successive sentences, clauses or lines. The repetition sets a scanning, almost incantatory rhythm that imprints the idea by hammering — it is the queen figure of political speech and oratory poetry.
In narrative prose it is rarer and therefore more marked: an anaphora in the middle of a sober chapter signals an emotional summit, a moment when the voice rises. Its power comes from the expectation it creates: by the second occurrence, the reader awaits the third. Breaking it at the right moment — with a twist, a variation — is often stronger than extending it.
Example
"We shall fight on the beaches, we shall fight on the landing grounds, we shall fight in the fields…"