How does God view war?

You'd have to ask them. Thor just loves to get into a battle.

I've yet to see Him intervene in any way against it. The OT is peppered with examples of God supporting, even encouraging war.

Exodus 15:3 - The Lord is a man of war: The Lord is his name.

Numbers 32:21 - And Moses said unto them, if ye do this thing, if ye be armed before the Lord to war.

Judges 3:10- And the Spirit of the Lord came upon him, and he judged Israel, and went out to war...

I usually don't dignify scriptures by quoting them, but the hideous Bible does plenty of indignity all by itself. 

The Bible describes God’s chosen Ruler, Jesus Christ, as the “Prince of Peace.” It further assures us that “to the abundance of the princely rule and to peace there will be no end.”—Isaiah 9:6, 7. We have full guarantee from the scriptures that Christ’s rule will successfully eliminate every kind of war? The prophet Isaiah adds: “The very zeal of Jehovah of armies will do this.” (Isaiah 9:7) God has the will and the means to preserve lasting peace. Jesus has every confidence in this promise. That is why he taught his followers to pray for God’s Kingdom to come and for God’s will to be done on earth. (Matthew 6:9, 10) When that sincere request is finally answered, war will never again blight the surface of the earth.

God is as addicted to war as a teenager is to video games. He finds them entertaining. Can't you imagine him rolling about on his kitchen floor, laughing at the inanity of the holy men of opposing armies all asking him to smite their enemies?

He's a mean old curmudgeon but we shouldn't judge him too harshly. After all, if you had spent 6,000 years sitting in Heaven, with nothing better to do than listen to whining requests from your believers, wouldn't you want to shed a little blood now and then?

Depends, there are many Gods that people believe in. Some of them are Gods of war. Some are god of piece.
We can't really know for sure, but I think that if there's an omnipotent and omniscient entity that created everything and everyone it should view war as something naturally occurring and perhaps, more as a purge, than anything else(survival of the fittest kind of thing). 

I apologise if this sounds too cynical.

A quote from the bible....a time for peace., a time for war.

Which "god"?

Even if you are talking about the Abrahamic "god" ... He sends mixed signals.  In the OT, He often demanded it.  In the NT, He seems to be against it.  In the Q'ran, He seems to encourage it again.

"Favorably" based on the Old Testament writings . . .