By this time, however, the Russians had recovered their breath in the Caucasus. On July 12, 1916, they recaptured by assault the town of Mama Khatun. The next day, after a violent night battle, they occupied a series of heights southeast of Mama Khatun. The Turks attempted to take the offensive, but were thrown back. Pressing closely upon them, the Russians took the villages of Djetjeti and Almali. The Russian offensive quickly assumed great strength. By July 14, 1916, the Russians were only ten miles from Baiburt, had again taken up their drive for Erzingan and had wrested from the Turks some strongly fortified positions southwest of Mush. Baiburt fell to the Russians on July 15, 1916. From then on the Russian advance continued steadily, although the Turks maintained a stiff resistance. On July 18, 1916, the Russians occupied the town of Kugi, an important junction of roads from Erzerum, Lhaputi and Khzindjtna. On July 20, 1916, the Grand Duke's troops captured the town of Gumuskhaneh, forty-five miles southwest of Trebizond. The next day, July 21, 1916, these forces had advanced to and occupied Ardas, about thirteen miles northwest of Gumuskhaneh. The West Euphrates was crossed the following day. On July 23, 1916, Russian troops on the Erzingan route, in the Ziaret Tapasi district, repulsed two Turkish counterattacks and occupied the heights of Naglika. East of the Erzingan route they captured a Turkish line on the Durum Darasi River. After having repulsed several Turkish attacks Russian cavalry has reached the line of Boz-Tapa-Mertekli. [Illustration: The Russians in Armenia.] Closer and closer the Russians approached to the goal for which they had striven for many months, Erzingan. On July 25, 1916, this strongly fortified Turkish city in Central Armenia, fell into the hands of the Russian Caucasus army under Grand Duke Nicholas. Erzingan, situated at an altitude of 3,900 feet, about one mile from the right bank of the Euphrates, manufactures silk and cotton and lies in a highly productive plain, which automatically comes into possession of the Russians. Wheat, fruit, wines, and cotton are grown in large quantities, and there are also iron and hot sulphur springs. With its barracks and military factories, the city formed an important army base. Erzingan has frequently figured in ancient history. It was here that the Sultan of Rum was defeated by the Mongols in 1243, and in the fourth century St. Gregory, "the Illuminator," lived in the city. Erzingan was added to the Osman Empire in 1473 by Mohammed II, after it had been held by Mongols, Tartars, and Turkomans. With the capture of Erzingan the Russians not only removed the strongest obstacle on the road to Sivas, Angora, and Constantinople, but also virtually completed their occupation of Turkish Armenia.