Though from what I understand, if I move my BTC now the BCH balance will remain on the old address/wallet?

Thanks,

My motivation for migrating to Ledger was initially for security purposes but I understand they already support BCH as well.
I'm just not sure when/how I should transfer my existing BTC.

 

I have had my BTC on Breadwallet up until now.
Just got a new Ledger nano which I want to use.
Question: If I transfer all my balance to Ledger now, how will I access my Bitcoin Cash and where?

Many thanks,