The subsequent failure of the Allies has led to bitter criticism of this movement. Had the Allies not failed, history would have treated it as its contemporaries treated it. The forces of the Allies on the north-eastern frontier were so great and their confidence so secure--especially after the fall of Valenciennes--that the English proposal to withdraw their forces for the moment from Coburg’s and to secure Dunquerque, was not received with any destructive criticism. Eighteen battalions and fourteen squadrons of the Imperial forces were actually lent to the Duke of York for this expedition. What is more, even after that diversion failed, the plan was fixed to begin again when the last of the other fortresses should have fallen: so little was the English plan for the capture of the seaport disfavoured by the commander-in-chief of the Allies. That diversion on Dunquerque turned out, however, to be an error of capital importance. The attempt to capture the city utterly failed, and the victory which accompanied its repulsion had upon the French that indefinable but powerful moral effect which largely contributed to their future successes. The accompanying sketch map will explain the position. Valenciennes and Condé have fallen; Lequesnoy, the small fortress subsidiary to Valenciennes, has not yet been attacked but comes next in the series, when the moment was judged propitious for the detachment of the Anglo-Hanoverian force with a certain number of Imperial Allies to march to the sea. It must always be remembered by the reader of history that military situations, like the situations upon a chess board, rather happen than are designed; and the situation which developed at the end of September upon the extreme north and west of the line which the French were attempting to hold against the Allies was strategically of this nature. When the Duke of York insisted upon a division of the forces of the Allies and an attack upon Dunquerque, no living contemporary foresaw disaster. [Illustration: Showing condition of the frontier fortresses blocking the road to Paris when the expedition to Dunquerque was decided upon. August 1793.] Coburg, indeed, would have preferred the English to remain with him, and asked them to do so, but he felt in no sort of danger through their temporary absence, nor, as a matter of fact, was he in any danger through it. Again, though the positions which the Duke of York took up when he arrived in front of Dunquerque were bad, neither his critics at home, nor any of his own subordinates, nor any of the enemy, perceived fully how bad they were. It was, as will presently be seen, a sort of drift, bad luck combined with bad management, which led to this British disaster, and (what was all-important for the conduct of the war) to the first success in a general action which the French had to flatter and encourage themselves with during all that fatal summer.