most essential service in the struggle which ensued. Few pieces of artillery were brought up on either side; the rapidity of the movements on both having outstripped the slow pace at which those ponderous implements of destruction were then conveyed.[23] Hardly were these defensive arrangements completed, when the tempest was upon them. The whole French right wing, consisting of thirty battalions, embracing the French and Swiss guards, and the flower of their army, debouched from the woods and hedges near Groemvelde, and attacking four battalions stationed there, quickly compelled them to retreat. Advancing then in the open plain, they completely outflanked the Allied left, and made themselves masters of the hamlets of Barwaen and Banlaney. This success exposed the Allies to imminent danger; for in their rear was the Scheldt, flowing lazily in a deep and impassable current, through marshy meadows, crossed only by a few bridges, over which retreat would be impossible in presence of a victorious enemy; and the success against the Allied left exposed to be cut off from their only resource in such a case, the friendly ramparts of Oudenarde. Anxiously observing the rapid progress of the French on his left, Marlborough successively drew brigade after brigade from his right, and moved them to the quarter which was now severely pressed. The hostile lines fought with the most determined resolution. Every bridge, every ditch, every wood, every hamlet, every inclosure, was obstinately contested; and so incessant was the roll of musketry, that, seen from a distance, the horizon seemed an unbroken line of fire. Hitherto Marlborough and Eugene had remained together; but now, as matters had reached the crisis, they separated. The English general bestowed on Prince Eugene the command of his right, where the British battalions, whose valour he had often praised, were placed. He himself, with the Prussian horse on the banks of the Norken, kept the enemy's left in check; while with his own left he endeavoured to outflank the enemy, and retaliate upon then the manoeuvre which they had attempted against him. This bold movement was attended with severe loss, but it proved completely successful. Eugene was soon warmly engaged, and at first wellnigh overpowered by the superior numbers and vehement onset of the enemy. But Marlborough, whose eye was every where, no sooner observed this, than he dispatched Cadogan with his twelve English battalions to his support. Encouraged by this aid, Eugene moved forward General Natzmer, at the head of the Prussian heavy horse and cuirassiers, to charge the enemy's second lines near the Mill of Royeghem; while he himself renewed the attack on their infantry near Herlehorn. Both attacks proved successful. The enemy were expelled on the right from the enclosure of Avelchens, and the battle restored in that quarter; while, at the same time, their second line was drivers back into the enclosures of Royeghem.