In order to understand the development, the terrain must be divided into several sectors, in each of which the operations, although closely co-ordinated, assumed, as a consequence either of the nature of the ground or of the peculiarities of the enemy defences, a different character. The unity of the action was nevertheless ensured by the simultaneity of the rush, which carried all the troops beyond the first position, past the batteries, to the defences established by the enemy on the heights to the south of Py.
[Sidenote: At extremities offensive does not progress.]
At the two extremities of our attacking front, subjected to converging fires and to counter-attacks on the flanks, our offensive made no progress. The fighting which took place in Auberive and round about Servon were distinguished by more than one trait of heroism, but they were destined to have no other result than that of containing the forces of the enemy and of immobilising him at the wings while the attack was progressing in the centre.
[Sidenote: Position from Auberive to Souain a triangle.]
(1) _Sector of l'Epine de Vedegrange._ The first German line was established at the base of a wide glacis covered with clumps of trees, and formed a series of salients running into each other. At certain points it ran along the edge of the woods where the supplementary defences were completed by abattis. The position as a whole between Auberive and Souain described a vast triangle. To the west of the road, from Saint-Hilaire to Saint-Souplet, the troops traversed the first enemy line and rushed forward for a distance of about a kilometre as far as a supporting trench, in front of which they were stopped by the wirework. A counterattack debouching from the west and supported by the artillery of Moronvillers caused a slight retirement of our left. The troops of the right, on the contrary, maintained their gains and succeeded on the following days in enlarging and extending them, remaining in touch with the units which were attacking on the east of the road. The latter had succeeded in a particularly brilliant manner in overcoming the difficulties with which they were confronted.
[Sidenote: Nature of the position captured.]