Mauboy and Stan Walker recorded a version of "Waltzing Matilda" to promote the 2012 Summer Olympics in Australia. It was released as a single on 3 August 2012. Military units It is used as the quick march of the 1st Battalion, Royal Australian Regiment and as the official song of the US 1st Marine Division, commemorating the time the unit spent in Australia during the Second World War. Partly also used in the British Royal Tank Regiment's slow march of "Royal Tank Regiment", because an early British tank model was called "Matilda". Annual Day 6 April has been observed as Waltzing Matilda Day annually in Australia since 2012. Covers and derivative works In 1995, it was reported that at least 500 artists in Australia and overseas had released recordings of "Waltzing Matilda", and according to Peter Burgis of the National Film and Sound Archive, it is "one of the most recorded songs in the world". Artists and bands who have covered the song range from rock stars to children's performers such as Burl Ives; to choirs, including the Mormon Tabernacle Choir. Jimmie Rodgers had a US#41 pop hit with the song in 1959. On 14 April 1981, on Space Shuttle Columbia's first mission, country singer Slim Dusty's rendition was broadcast to Earth. Films Versions of the song have been used as the title of, or been prominently featured in, a number of films and television programs. Waltzing Matilda is a 1933 Australian film directed by and starring Pat Hanna. It features a young Coral Browne. The introduction of the song was the title of Once a Jolly Swagman, a 1949 British film starring Dirk Bogarde. An animated short was made in 1958 for Australian television. Ernest Gold used the song and variations of it extensively in the 1959 film On the Beach. The 2017 short film Waltzing Tilda features various versions of the song and it is also sung by the main character. The song is featured in the 2019 film Deadwood: The Movie despite the film being set in 1889, six years before the song was written. TV series The theme song of the 1980 Australian television series Secret Valley is sung to a faster version of the tune of "Waltzing Matilda". Video games It is the theme song for Australia in the video game Civilization VI. The song is the basis for a side-quest in Borderlands: The Pre-Sequel,