the country's borders. Until the fall of communism the army's prestige continued to fall, as it was used by the communist government to violently suppress several outbursts of protest, including the Poznań 1956 protests, the Polish 1970 protests, and protests during Martial law in Poland in 1981–1982. Troops of the Silesian Military District also took part in the suppressing of the 1968 democratisation process of Czechoslovakia, commonly known as the Prague Spring. In 1989 the Pomeranian Military District controlled the 8th, 12th, 15th, 16th, and 20th Divisions, the Silesian Military District controlled the 2nd, 4th, 5th, 10th, and 11th Divisions, and the Warsaw Military District the 1st, 3rd, and 9th Divisions, plus the 6th Airborne Division earmarked for Front control. The 7th Sea Landing Division was based within the Pomeranian Military District but probably earmarked for front control. The two districts facing Germany each controlled four divisions in 1990, which had been recently reorganised, in line with the late 1990s Soviet defensive doctrine, from a 3:1 mix of motor rifle : tank regiments into a 2:2 mix of motor rifle and tank regiments. The Warsaw Military District in the east controlled only the 1st Mechanised Division. Two other mechanised divisions in that district had been disbanded in 1988. There was also the 6th Airborne Division and the 7th Sea Landing Division, possibly intended to form part of a Warsaw Pact attack on Denmark, to open the Baltic straits to the North Sea and beyond. There were 205,000 personnel, of which 168,000 were conscripts. Since 1989 Following the end of the Cold War the Wojska Lądowe was drastically reduced and reorganised. In 1992, the Kraków Military District was recreated. From nine divisions, the total was planned in 2001 to fall to four, plus six independent brigades. Since 1 January 1999, Poland has been divided into two military districts. These are the Pomeranian Military District (Pomorski Okręg Wojskowy) with HQ in Bydgoszcz, covering northern Poland, and the Silesian Military District (Śląski Okręg Wojskowy) with HQ in Wrocław, covering southern Poland. From that date the former Krakow Military District became the headquarters of the Air-Mechanized Corps, which later became the headquarters of the 2nd Mechanised Corps. On 1 September 2011 the 1st Warsaw Mechanised Division was disbanded. General Edward Pietrzyk served as commander of the Polish Land Forces from 2000 to September 2006. He was succeeded by General Waldemar Skrzypczak (2006–2009). In May