Question: A country's military branch, the equivalent of which in the US contains the Air Defense Artillery, was unprepared for the invasion of the country that developed the ZH-29. When was the word "Slavs" used in the national anthem of the unprepared country?

The word "Slavs" was used in the national anthem of the Slovak Republic (1939–1945), Yugoslavia (1943–1992) and the Federal Republic of Yugoslavia (1992–2003), later Serbia and Montenegro (2003–2006). <SEP> his opponents learned from napoleon's innovations. the increased importance of artillery after 1807 stemmed from his creation of a highly mobile artillery force, the growth in artillery numbers, and changes in artillery practices. as a result of these factors, napoleon, rather than relying on infantry to wear away the enemy's defenses, now could use massed artillery as a spearhead to pound a break in the enemy's line that was then exploited by supporting infantry and cavalry. mcconachy rejects the alternative theory that growing reliance on artillery by the french army beginning in 1807 was an outgrowth of the declining quality of the french infantry and, later, france's inferiority in cavalry numbers. weapons and other kinds of military technology remained largely static through the revolutionary and napoleonic eras, but 18th-century operational mobility underwent significant change. <SEP> a major consideration was the possible soviet reaction in the event that the us intervened. the truman administration was fretful that a war in korea was a diversionary assault that would escalate to a general war in europe once the united states committed in korea. at the same time, "[t]here was no suggestion from anyone that the united nations or the united states could back away from [the conflict]". yugoslavia–a possible soviet target because of the tito-stalin split—was vital to the defense of italy and greece, and the country was first on the list of the national security council's post-north korea invasion list of "chief danger spots". truman believed if aggression went unchecked a chain reaction would be initiated that would marginalize the united nations and encourage communist aggression elsewhere. the un security council approved the use of force to help the south koreans and the us immediately began using what air and naval forces that were in the area to that end. the administration still refrained from committing on the ground because some advisers believed the north koreans could be stopped by air and naval power alone. <SEP> In April 1969, Tito removed generals Ivan Gošnjak and Rade Hamović in the aftermath of the invasion of Czechoslovakia due to the unpreparedness of the Yugoslav army to respond to a similar invasion of Yugoslavia. In 1968, Tito offered Czechoslovak leader Alexander Dubček to fly to Prague on three hours notice if Dubček needed help in facing down the Soviets. <SEP> The ZH-29 is one of the first successful self-loading rifles in service. The ZH-29 was a semi-automatic rifle developed in Czechoslovakia during the late 1920s, and used by the Chinese National Revolutionary Army. <SEP> The army is also divided into major branches such as Air Defense Artillery, Infantry, Aviation, Signal Corps, Corps of Engineers, and Armor. Currently, the army is divided into the Regular Army, the Army Reserve, and the Army National Guard. Before 1903 members of the National Guard were considered state soldiers unless federalized (i.e., activated) by the President. Since the Militia Act of 1903 all National Guard soldiers have held dual status: as National Guardsmen under the authority of the governor of their state or territory and, when activated, as a reserve of the U.S. Army under the authority of the President.