We'll see each other
The phrase 'Wir werden uns sehen.' is a common way to express 'We'll see each other.' in German. It is a future tense construction using the auxiliary verb 'werden' and the reflexive pronoun 'uns'. The phrase is used to indicate that two or more people will meet or see each other at some point in the future.
I hope we will see each other before you depart.
The phrase 'Wir werden uns sehen' is used in a context indicating a future meeting between the speaker and the addressee, in this case, before the departure of the latter.
They assured that we will see each other before the year ends.
This phrase employs 'Wir werden uns sehen' in a context where an assurance has been given for a rendezvous between the speaker and the individual or group he is referring to, before the end of the current year.
If you are in Berlin, we will see each other.
'Wir werden uns sehen' is used in this phrase implying a future encounter between the speaker and the person addressed, conditioned by the latter being in Berlin.