one by one, and when his communications were thus secure, to march upon Paris.
It is here necessary for the reader unacquainted with military history to appreciate two points upon which not a little of contemporary historical writing may mislead him. The first is that both in the Rhine valley and on the Belgian frontier the forces of the Allies in their numbers and their organisation were conceived to be overwhelming. The second is that no competent commander on the spot would have thought of leaving behind him the garrison of even one untaken fortress. It is important to insist upon these points, because the political passions roused by the Revolution are still so strong that men can hardly write of it without prejudice and bias, and two errors continually present in these descriptions of the military situation in the spring of 1793, are, first, that the Allies were weakened by the Polish question, which was then active, and secondly, that the delay of their commanders before the French fortresses was unnecessary.
Both these propositions are put forward with the object of explaining the ultimate defeat of the enemies of the Revolution: both, however great the authority behind them, are unhistorical and worthless. The French success was a military success due to certain military factors both of design and accident, which will appear in what follows. The Allies played their part as all the art of war demanded it to be played; they were ultimately defeated, not from the commission