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?

Context paragraphs:
paragraph_text: The Ministry of National Defense of the Republic of Ecuador is the ministry responsible for national defense and is responsible for controlling all three branches of the Military of Ecuador.
title: Ministry of National Defence (Ecuador)
paragraph_text: 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).
title: Slavs
paragraph_text: ``My Country, 'Tis of Thee '', also known as`` America'', is an American patriotic song, whose lyrics were written by Samuel Francis Smith. The melody used is the same as that of the national anthem of the United Kingdom, ``God Save the Queen '', arranged by Thomas Arne. The song served as one of the de facto national anthems of the United States (along with songs like`` Hail, Columbia'') before the adoption of ``The Star - Spangled Banner ''as the official U.S. national anthem in 1931.
title: America (My Country, 'Tis of Thee)
paragraph_text: ``This Is What It Feels Like ''is a song by Dutch DJ and record producer Armin van Buuren. It features the vocals from Canadian singer and songwriter Trevor Guthrie. The song was released in the Netherlands by Armada Music as a digital download on 29 April 2013 as the second single from van Buuren's fifth studio album Intense. It became a top 10 hit in ten countries. In the Netherlands, the song peaked at number 3 on the Dutch Top 40.`` This Is What It Feels Like'' became van Buuren's first top 10 hit in the United Kingdom, peaking at number 6 on the UK Singles Chart.
title: This Is What It Feels Like
paragraph_text: ``What Is Love ''is a song recorded by Trinidadian - German Eurodance artist Haddaway for his debut album, The Album. The song is recognizable by its refrain`` What is love? Baby do n't hurt me, do n't hurt me... no more.'' It was a No. 1 hit in 13 countries.
title: What Is Love
paragraph_text: Due to the popularity of ``L's Anthem ''and its follow - up single,`` Dis Ai n't What U Want'' in 2013, Durk accepted a joint venture deal with his collective Only the Family and Def Jam Recordings.
title: Lil Durk
paragraph_text: 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. 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.
title: Josip Broz Tito
paragraph_text: The ZH-29 was a semi-automatic rifle developed in Czechoslovakia during the late 1920s, and used by the Chinese National Revolutionary Army. The ZH-29 is one of the first successful self-loading rifles in service.
title: ZH-29
paragraph_text: Jana Gana Mana is the national anthem of India. It is composed in Bengali by poet Rabindranath Tagore.. The composition consisting of the words and music of the first stanza of the late poet Rabindra Nath Tagore's song known as ``Jana Gana Mana ''is the National Anthem of India.
title: Jana Gana Mana
paragraph_text: The first Armenian churches were built between the 4th and 7th century, beginning when Armenia converted to Christianity, and ending with the Arab invasion of Armenia. The early churches were mostly simple basilicas, but some with side apses. By the fifth century the typical cupola cone in the center had become widely used. By the seventh century, centrally planned churches had been built and a more complicated niched buttress and radiating Hrip'simé style had formed. By the time of the Arab invasion, most of what we now know as classical Armenian architecture had formed.
title: Armenians
paragraph_text: Design started in the late 1970s at the Molniya design bureau in Ukraine on what would be their only air-to-ground munition, but when they moved exclusively to space work Vympel took over development of the Kh-29. The first firing of the missile took place in 1976 and after extensive trials the Kh-29 was accepted into service in 1980.
title: Kh-29
paragraph_text: Currently, the army is divided into the Regular Army, the Army Reserve, and the Army National Guard. The army is also divided into major branches such as Air Defense Artillery, Infantry, Aviation, Signal Corps, Corps of Engineers, and Armor. 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.
title: United States Army
paragraph_text: Transcontinental Air Transport (T-A-T) was an airline founded in 1928 by Clement Melville Keys that merged in 1930 with Western Air Express to form what became TWA. Keys enlisted the help of Charles Lindbergh to design a transcontinental network to get government airmail contracts. Lindbergh established numerous airports across the country in this effort.
title: Transcontinental Air Transport
paragraph_text: The armed forces have three branches: Navy, Army and Air Force. They serve primarily as a self-defense force whose mission is to protect the territorial integrity of the country and provide humanitarian assistance and security at home and abroad. As of 2008, the three branches numbered 39,200 active personnel including 7,500 women. Portuguese military expenditure in 2009 was $5.2 billion, representing 2.1 percent of GDP. Military conscription was abolished in 2004. The minimum age for voluntary recruitment is 18 years.
title: Portugal
paragraph_text: ``In Plenty and In Time of Need ''is the national anthem of the country of Barbados. It was written by Irving Burgie (1926 --) and was composed by C. Van Roland Edwards (1912 -- 1985). As one part of the West Indies Federation from 1958 -- 1962, Barbados' anthem was supposed to be Forged from the Love of Liberty (which is currently the national anthem of Trinidad and Tobago), however the current anthem was created with Barbados' moves toward full independence. This song was then adopted by Barbados when it became independent in 1966.
title: In Plenty and In Time of Need
paragraph_text: The following day, the armies of four Arab countries—Egypt, Syria, Transjordan and Iraq—entered what had been British Mandatory Palestine, launching the 1948 Arab–Israeli War; Contingents from Yemen, Morocco, Saudi Arabia and Sudan joined the war. The apparent purpose of the invasion was to prevent the establishment of the Jewish state at inception, and some Arab leaders talked about driving the Jews into the sea. According to Benny Morris, Jews felt that the invading Arab armies aimed to slaughter the Jews. The Arab league stated that the invasion was to restore law and order and to prevent further bloodshed.
title: Israel
paragraph_text: The Marseillaise was a revolutionary song, an anthem to freedom, a patriotic call to mobilize all the citizens and an exhortation to fight against tyranny and foreign invasion. The French National Convention adopted it as the Republic's anthem in 1795. The song acquired its nickname after being sung in Paris by volunteers from Marseille marching to the capital. The song is the first example of the ``European march ''anthemic style. The anthem's evocative melody and lyrics have led to its widespread use as a song of revolution and its incorporation into many pieces of classical and popular music.
title: La Marseillaise
paragraph_text: 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.
title: Korean War
paragraph_text: 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.
title: Napoleon
paragraph_text: Patrick S. Castagne composed the words and music of the National Anthem in 1962. Mr Castagne, a renowned West Indian songwriter, was employed at the Trinidad and Tobago Commission in London. One of his compositions, called ``A Song for the Islands ''or A Song for Federation, was submitted to the West Indies Federation as a possible anthem.
title: Forged from the Love of Liberty

Reasoning steps:
The country for ZH-29 was what? >>>> Czechoslovakia
The Air Defense Artillery is a branch of what? >>>> the Army
What the Army was unprepared for the invasion of Czechoslovakia ? >>>> Yugoslavia
When was the word "Slavs" used in the national anthem of Yugoslavia ? >>>> 1943–1992

Answer: spans: 1943–1992