After Russian forces were
defeated in 1879, Russia began to plan for a new campaign. The basic problem was moving up supplies since Akhal was an oasis surrounded by several hundred kilometres of semi-desert. In March 1880
Mikhail Skobelev was put in charge of the Trans-Caspian region. He adopted
Lazarev's original plan of a slow and massive advance. Instead of Khoja Kale he chose a base at Bami on the north side of the Kopet Dagh. At some point he decided to take Geok Tepe by siege rather than storm. He arrived at Chikislyar in May, advanced up the
Atrek and
Sumbar rivers and by June 11 he occupied Bami. The build-up was slow, partly due to the shortage of camels. In July he made a reconnaissance in force to examine Geok Tepe. By the first half of December he had enough men and supplies and moved out to occupy a fort he renamed ‘Samur’ a few kilometres west of Geok Tepe. On 27 December
Aleksey Kuropatkin arrived with five companies, having made a remarkable march across the desert from
Khiva. By the end of the month Skobelev had 4020 infantry, 750 cavalry as well as artillery, rockets, several machine guns and
heliographs for communications. About 40000 Tekkes were thought to be in the area. On 1 January 1881 he occupied Yanghi-Kala south of the fort to control the water supply and the following day chose the southeast corner as the point of attack and on the following day moved the main camp to Yanghi-Kala. On 4–8 January the first parallel was built about from the fort and a second begun. To protect this a detachment was sent to capture a small redoubt to the north and General Petrushevich was killed after rushing through the gate. The Tekkes made sorties on the 9th, 11th and 16th. These were largely successful, but cost many Turkoman lives. The camp was twice moved north to make it easier to deal with sorties. The Russians only had enough men to hold a siege line in the southeast corner and the Tekkes were usually allowed to move in and out on the north side of the fort. On January 18 a mine was started on the southeast side and two days later artillery made a breach in the south wall which was quickly repaired. On 23 January the mine was completed and loaded with of powder. ==Battle==