Soldier landing on Banna Strand - a sandy place that's not open to the public (7,5)

'a sandy place that's not open to the public' is the definition.
I know nothing about this answer so I can't judge whether it can be defined by this definition.

'soldier landing on banna strand' is the wordplay.
I cannot quite see how this works, but
'soldier' could be 'private' (I've seen this before) and 'private' is found in the answer.
'strand' could be 'beach' (I've seen this in another clue) and 'beach' is present in the answer.
This accounts for all the letters.
This may be the basis of clue (or it may be nonsense).

Can you help me to learn more?