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 request air support on his own position by a Lockheed AC-130 gunship; he ordered his men to take cover and with his Forward Air Controller (FAC) guided the American air attack. At such close quarters, however, it was a harrowing experience for Kroon and his FAC. Later, his platoon was forced to take cover in an Afghan house, whence they repulsed repeated attacks during the night. No men fell under Kroon's command, but the resulting Taliban losses were severe. After the dawn, Kroon and his men emerged to retrieve intelligence from the dead Talibani to establish their identity. Kroon