Our chronicle has now reached the three last, and the decisive months of the war. It was a period of continuous fighting, in which a battle begun in any particular sector would spread along the front on either hand, until at last, by the middle of October, the whole line was in roaring conflagration; and by the second week in November the blaze had swept on almost to the borders of Germany, and the forces of the enemy had withered and shrivelled before it. At first we made a series of more or less set attacks. Then came the break through the Hindenburg Line after the Second Battle of Cambrai, and the hastily-organised running fights of October, which culminated in the complete overthrow of German arms. The whole period is at the moment of writing exceedingly difficult to dissect and to classify into definite battles, it being usually a matter of opinion when one engagement can be said to have ended and another to have begun. The nomenclature even is still fluid. Take, for example, the vast inchoate battle which raged from August 21 and 23 and culminated on September 2. It was fought by three separate armies. There were at least three principle “Z” days, and the battle seems to be indifferently known as the Battle of Bapaume, the Second Battle of Arras, or even as the Battle of Amiens. Nor if the historian were to attempt to name it by date would it be clearly more proper to call it the Battle of August 23 or 21. There is a good deal to be said for the German plan of christening their battles by some fancy name, or dubbing them “Kaiserchlact” or “Clarence,” according to one’s taste. A campaign of nameless battles is apt to defy Clio’s efforts at dissection and tidy arrangement, and to defeat her longing to see a neat row of actions dried, classified, and labelled in her _Hortus Siccus_. We have indicated the changes which had taken place in the attitude of our own and the German High Commands toward Tanks. Much had been learnt by the Tank Corps themselves, and much had been regularised and systematised in their methods. We find that by August, Tank Corps preparation for a battle had been so completely reduced to a routine that to attempt to chronicle the preparation for any of our set attacks would be to make a mere _cento_, whose pieces might be culled from particulars already recorded for Cambrai, for Hamel and for Amiens. We therefore trust that the reader, without hearing any enumeration of gallons of petrol, tons of grease, or acres of maps, will understand that each of these “formal” battles was preceded by the usual herculean tasks of preparation. IV