Engineer reminds open branch to get guard dog (9,8)

I believe the answer is:

dobermann pinscher

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'engineer reminds open branch to get guard dog' is the definition.
I don't know anything about this answer so I cannot tell whether it can be defined by this definition.

'to get guard dog' is the wordplay.
'to' becomes 'n' (I can't explain this - if you can you should give a lot more credence to this answer).
'get' is an insertion indicator.
'guard dog' becomes 'Doberman pinscher' (Doberman pinscher is an example).
'n' put within 'dobermanpinscher' is 'DOBERMANN PINSCHER'.

Can you help me to learn more?

(Another definition for dobermann pinscher that I've seen is " breed of dog".)

I've seen this clue in The Times.

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