Inexperienced party in state of confusion going all the way back to Mars (3,2,3)

'mars' is the definition.
The definition and answer can be both people as well as being singular nouns.
Perhaps they are linked in a way I don't understand?

'inexperienced party in state of confusion going all the way back' is the wordplay.
I cannot really see how this works, but
'party' could be 'do' (do is a kind of party) and 'do' is located in the answer.
'state' could be 'war' (war is a kind of state) and 'war' is found in the answer.
'of' could be 'o' and 'o' is found in the answer.
This explanation may well be incorrect...

'to' is the link.

Can you help me to learn more?