Wikipedia: "The Royal Edinburgh Military Tattoo is an annual series of Military tattoos performed by British Armed Forces, Commonwealth and International military bands and display teams in the Scottish capital Edinburgh. The event takes place annually throughout August, as part of the wider Edinburgh Festival (a collective name for many independent festivals and events in Edinburgh in August).
The word "Tattoo" is derived from "Doe den tap toe", or just "tap toe" ("toe" is pronounced "too"), the Dutch for "Last orders". Translated literally, it means: "put the tap to", or "close or turn off the tap". The term "Tap-toe" was first encountered by the British Army when stationed in Flanders during the War of the Austrian Succession.
Here on that picture a press event took place with the participation of a Jordanian horse andf it's officer.