On August 30, General Pershing took over the command of the First Army, with Headquarters at Ligny-en-Barrois. At that time, the front line of the salient ran as follows: from Eparges Crest it descended in an almost straight line to St. Mihiel, along the Meuse Heights; passing thence round St. Mihiel, the great bend in the Meuse and the Camp-des-Romains, it described a vast semicircle; then turning sharply eastwards, it proceeded towards Pont-à-Mousson, passing through the woods of Apremont, Ailly, Mortmare and Le Prêtre.
The total length of the salient front was about 65 km., and its width along the German lines between Eparges and Regniéville (near Prêtre Wood) about 39 km. It penetrated the French lines to a maximum depth of 22 km.
ST. MIHIEL SALIENT PRIOR TO THE OFFENSIVE OF SEPT., 1918
It measured 39 km. across its greatest width, 22 km. in depth, and about 65 km. along its front.
Since 1916 this important salient had been fairly quiet, and beyond intermittent bombardments—which showed that the lines on both sides were defended and that the artillery was on the alert—and a few local attacks, the communiqués had nothing to report. This salient, however, greatly hampered the French lines of communication, cutting as it did the railway between Verdun and Toul. This line, which runs as far as Epinal and Belfort, linked up these four great eastern fortresses before the war.