Dispute or ban low gear manoeuvres? (5-4,3)

I believe the answer is:

anglo-boer war

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

'dispute' is the definition.
I don't know anything about this answer so I can't tell whether it can be defined by this definition.

'or ban low gear manoeuvres?' is the wordplay.
'manoeuvres?' indicates an anagram (I've seen 'manoeuvring' mean this).
'or'+'ban'+'low'+'gear'='orbanlowgear'
'orbanlowgear' with letters rearranged gives 'ANGLO-BOER WAR'.

Can you help me to learn more?

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.