Full Idea
Not only do peoples emerge from wars with added strength, but nations troubled by civil dissension gain internal peace as a result of wars with their external enemies.
Gist of Idea
Wars add strength to a nation, and cure internal dissension
Source
Georg W.F.Hegel (Elements of the Philosophy of Right [1821], 324 add)
Book Reference
Hegel,Georg W.F.: 'Elements of the Philosophy of Right', ed/tr. Wood,Allen W. [CUP 1991], p.652
A Reaction
I suspect that Hegel quite likes wars because they accelerate the development of history. I don't think he would have written nonsense like this after WW1 and WW2. Leaders facing internal dissent like small external wars.