I want to write "one day the dogs will invade to conquer us".

Do I write {wa' jaj nucharghmeH, yot *dogmey*} ?

Or do I write {nucharghmeH, wa' jaj yot *dogmey*} ?

It depends on what you mean. Do you mean one day the dogs will invade, or do you mean to conquer us one day?

The time expression goes on the front of the clause it's a part of. Dependent clauses get stuck on the ends of otherwise complete clauses.

wa' jaj nucharghmeH, yot dogmey
In order to conquer us one day, the dogs invade.
Maybe they invade now in order that, one day, we will be conquered.

nucharghmeH, wa' jaj yot dogmey
In order to conquer us, one day the dogs invade.
The dogs invade one day, and their job is to conquer us, probably on that very day.

-- 
SuStel
http://trimboli.name