Estonian kroon until the Soviet invasion in 1940 and Estonia's subsequent incorporation into the Soviet Union when it was replaced by the Soviet ruble. After Estonia regained its independence, the kroon was reintroduced in 1992. The kroon became the currency of Estonia on 1 September 1928 after having been a unit of account since 1924. It replaced the mark at a rate of 100 mark = 1 kroon. The kroon was subdivided into 100 sent. In 1924, the kroon was pegged to the Swedish krona at par, with a gold standard of 2480 kroon = 1 kilogram of pure gold. The standard
Marco Kroon to the Afghan province of Uruzgan. His job, as platoon commander of the Dutch special forces unit "Viper", was to reconnoiter and to map the area so that Task Force Uruzgan could be established. In this period he distinguished himself by exceptional deeds during six extremely dangerous actions which broke out during ISAF patrols by "Viper" and a platoon of the Australian Special Air Service Regiment. One of these actions was Operation Chitag (13–14 July 2006). During the patrol, Kroon encountered a group of Taliban fighters. In the ensuing battle, while the Dutch troops were heavily outnumbered, Kroon was forced