In view of the peculiar formation of the ground on the north side of the river between Missy and Soissons, and its extraordinary adaptability to a force on the defensive, the Fifth Division found it impossible to maintain its position on the southern edge of the Chivres Plateau, as the enemy in possession of the Village of Vregny to the west was able to bring a flank fire to bear upon it. The division had, therefore, to retire to a line the left of which was at the village of Marguerite, and thence ran by the north edge of Missy back to the river to the east of that place. With great skill and tenacity Sir Charles Fergusson maintained this position throughout the whole battle, although his trenches were necessarily on lower ground than that occupied by the enemy on the southern edge of the plateau, which was only 400 yards away. Gen. Hamilton with the Third Division vigorously attacked to the north, and regained all the ground he had lost on the 15th, which throughout the battle has formed a most powerful and effective bridge-head. 6. On the 16th the Sixth Division came up into line. It had been my intention to direct the First Corps to attack and seize the enemy's position on the Chemin-des-Dames, supporting it with this new reinforcement. I hoped, from the position thus gained, to bring effective fire to bear across the front of the Third Division, which, by securing the advance of the latter, would also take the pressure off the Fifth Division and the Third Corps. But any further advance of the First Corps would have dangerously exposed my right flank. And, further, I learned from the French Commander in Chief that he was strongly reinforcing the Sixth French Army on my left, with the intention of bringing up the allied left to attack the enemy's flank, and thus compel his retirement. I therefore sent the Sixth Division to join the Third Corps, with orders to keep it on the south side of the river, as it might be available in general reserve. On the 17th, 18th, and 19th the whole of our line was heavily bombarded, and the First Corps was constantly and heavily engaged. On the afternoon of the 17th the right flank of the First Division was seriously threatened. A counter-attack was made by the Northamptonshire Regiment in combination with the Queen's, and one battalion of the Divisional Reserve was moved up in support. The Northamptonshire Regiment, under cover of mist, crept up to within a hundred yards of the enemy's trenches and charged with the bayonet, driving them out of the trenches and up the hill. A very strong force of hostile infantry was then disclosed on the crest line. This new line was enfiladed by part of the Queen's and the King's Royal Rifles, which wheeled to their left on the extreme right of our infantry line, and were supported by a squadron of cavalry on their outer flank. The enemy's attack was ultimately driven back with heavy loss.