SM Stirling, The Scourge Of God (New York, 2009), Chapter Sixteen.
A band of Ranchers pursues a band of Sioux, then challenges them to a series of single combats. Both sides prefer this to an all out battle. I would not. If I had to fight, then I would want to be with my comrades, not alone.
Single combat has been an occasional blog topic. See here.
In previous posts, I have mentioned a Goth night and Lancaster Comics Day. Tonight I will miss the former because my car is off the road and tomorrow will miss the latter because I will instead travel with others to Manchester to counterdemonstrate against the English Defence League. (Definitely a situation where I prefer mass mobilization to single combat.)
We are living in times of change. Reality shifts around us. For decades, sf writers have been right to describe change and to show us how the human race responds to it. Now we participate.