[Iaurhirwen]

In Tolkien's works, war was inevitable. It was either fight or be conquered. But you will notice how Tolkien emphasises not the "glories" of war but the harships and heartache that occur becuase of war.

The death of a good king, Theoden
The death of a king's son Theodred
The corruption of Denethor
The corruption of Sauruman
The pain and the fear felt by all involved
The destruction/corruption of a home, the Shire
And much more

It is in my humble opinion that Tolkien did not intended to glorify war in any way. Instead it is a horrible and saddening necessity, needed at times when a peaceful resolution cannot be found. I believe that Tolkien would always work to find a peaceful solution to any problem, rather that fight.