Crossword Genius

Run section clashing with old commanders (10)

Ross

I believe the answer is:

centurions

I'm a little stuck... Click here to teach me more about this clue!

'old commanders' is the definition.
The answer and definition can be both people as well as being plural nouns.
Maybe there's a link between them I don't understand?

'run section clashing' is the wordplay.
'run section' can be anagrammed to 'CENTURIONS'.
Though, I am unsure how this is indicated.

'with' acts as a link.

Can you help me to learn more?

I've seen this clue in the Irish Times.
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