The battle of Belmont (November 7, 1861), as this baptism of fire was called, is said to have caused more mourning than almost any other engagement of the war, for up to that time there had been but little loss of life and its list of killed and wounded, mounting into the hundreds, made a painfully deep impression. In this respect, it was decidedly ominous of Grant's future record, but it accomplished his purpose in detaining the Confederates and he was soon to prove his willingness to accept defeats as necessary incidents to any successful campaign and to fight on undismayed. Chapter XIII. -- Grant's First Success 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. But Grant had studied the maps to some purpose in his office at Cairo and he realized that the possession of the Mississippi River was the key to the situation in the West. As long as the Confederates controlled that great waterway which afforded them free access to the ocean and fairly divided the Eastern from the Western States, they might reasonably hope to defy their opponents to the end of time. But, if they lost it, one part of the Confederacy would be almost completely cut off from the rest. Doubtless, other men saw this just as clearly and quite as soon as Grant did; but having once grasped an idea he never lost sight of it, and while others were diverted by minor matters, he concentrated his whole attention on what he believed to be the vital object of all campaigning in the West.