In Greek mythology, Leto (/ˈliːtoʊ/; Greek: Λητώ Lētṓ; Λατώ, Lātṓ in Dorian Greek, etymology and meaning disputed) is a daughter of the Titans Coeus and Phoebe, the sister of Asteria. and mother of Apollo and Artemis.
The island of Kos is claimed as her birthplace. In the Olympian scheme, Zeus is the father of her twins, Apollo and Artemis, the Letoides, which Leto conceived after her hidden beauty accidentally caught the eyes of Zeus. Classical Greek myths record little about Leto other than her pregnancy and her search for a place where she could give birth to Apollo and Artemis, since Hera in her jealousy had caused all lands to shun her. Finally, she finds an island that is not attached to the ocean floor so it is not considered land and she can give birth. This is her one active mythic role: once Apollo and Artemis are grown, Leto withdraws, to remain a dim and benevolent matronly figure upon Olympus, her part already played. In Roman mythology, Leto's equivalent is Latona, a Latinization of her name, influenced by Etruscan Letun.
Leto is a surname. Notable people with the surname include:
Leto is a monotypic moth genus of the family Hepialidae. The only described species is L. venus which is endemic to South Africa. The larval food plant is Virgilia.
Echelon may refer to:
Echelon is a 3-D science fiction flight simulator video game designed by Russian developers MADIA. It involves flying futuristic fighters in combat scenarios. The game can be played locally or on a local area network with up to 32 players. The Russian version of the game is called "Шторм" ("Storm"). The plot of the first-person shooter game Operation: Matriarchy (also developed by MADIA) takes place in the same general universe as Echelon.
Echelon was nominated as "Sci-Fi Simulation Game of the Year" by GameSpot, 2001.
In 2002 a sequel, Echelon: Wind Warriors, was released.
An echelon formation is a (usually military) formation in which its units are arranged diagonally. Each unit is stationed behind and to the right (a "right echelon"), or behind and to the left ("left echelon"), of the unit ahead. The name of the formation comes from the French word échelon, meaning a rung of a ladder, which describes the shape that this formation has when viewed from above or below.
Use of the formation dates back to ancient infantry and cavalry warfare when attempting to flank an enemy or to break one wing with overwhelming numbers. One of the earliest uses was at the Battle of Leuctra when the Thebans attacked the Spartan right with a column 48 men deep while their weaker center and right were refused. The echelon formation was also used by Hannibal at the Battle of Cannae, Alexander the Great at the Battle of Gaugamela, Frederick II of Prussia, and the Confederate army at the Battle of Gettysburg
The tactic persists up to the present day, where it is regularly employed by all branches of the modern armed forces. Tactically, echelon formations are used because of the excellent range of vision offered to each participant in the formation. In particular, it is commonly employed by armored cavalry because of the large, overlapping fields of fire that it gives to each tank in the formation, and by combat aircraft, where the close, streamlined flight formation can allow the planes to dramatically reduce fuel consumption by "surfing" the updraft created by the wingtip vortices of the aircraft ahead.