The U.N. Spacy (United Nations Space Navy) is the fictional military arm of the Earth U.N. Government (地球統合政府 "Chikyuu Tougou Seifu") in the Macross Japanese anime series.
The organization's name is derived from words SPACE and NAVY, therefore, combining them to make the word SPACY.
In the Macross chronology it was established after 1999 by the successor to the modern United Nations in order to defend Earth from a possible attack by hostile aliens.
However, from 1999 to 2008 the U.N. Spacy was also involved in the U.N. Wars conflict, fighting against a human Anti-U.N. faction opposed to the formation of the worldwide U.N. government.
A year later (2009) the U.N. Spacy was involved in the subsequent Space War I, defending our planet from an hostile extraterrestrial race called the Zentradi. Later operations of the U.N. Spacy expanded into interstellar colonization and general peacekeeping of off-world Earth settlements.
At the time of the Zentradi invasion, the U.N. Spacy's assets included military bases on Earth, the Moon and Mars, squadrons of variable fighters and other mecha, several capital spacecraft in orbit and the repaired SDF-1 Macross on South Ataria Island, the flagship of the United Nations Spacy.
The U.N. Spacy was succeeded by the New U.N. Spacy (N.U.N.S.).
In the ROBOTECH western adaptation the U.N. Spacy is reimagined as the actual space navy component of the Robotech Defense Force (R.D.F.).