Up to this time the war in the West had been largely an affair of skirmishes. A body of Union troops would find itself confronting a Confederate force, one of the two commanders would attack and a fight would follow; or the Confederates would march into a town and their opponents would attempt to drive them out of it, not because it was of any particular value, but because the other side held it. "See-a-head-and-hit-it" strategy governed the day and no plan worthy of the name had been adopted for conducting the war on scientific principles.