An acoustic shadow is an area through which sound waves fail to propagate, due to topographical obstructions or disruption of the waves via phenomena such as wind currents. As one website refers to it, "an acoustic shadow is to sound what a mirage is to light"^[1].For example, at the Battle of Iuka, a northerly wind prevented General Ulysses S. Grant from hearing the sounds of battle and sending more troops. Many other instances of acoustic shadowing were prevalent during the American Civil War, including the Battles of Gaines' Mill and Perryville. For discussion of land surfaces themselves, see Terrain. ... This article is about mirage, an optical phenomenon. ... The Battle of Iuka was a United States Civil War battle fought from October 3 - September 19, 1862 in Iuka, Mississippi. ... Ulysses S. Grant[2] (born Hiram Ulysses Grant, April 27, 1822 – July 23, 1885) was an American general and the 18th President of the United States (1869–1877). ... Battle of Gaines Mill Conflict American Civil War Date June 27, 1862 Place Hanover County, Virginia Result Confederate victory The Battle of Gaines Mill, also known as the First Battle of Cold Harbor or the Battle of Chickahominy River, took place on June 27, 1862, in Hanover County, Virginia, as... Combatants United States of America Confederate States of America Commanders Don Carlos Buell Braxton Bragg Strength Army of the Ohio Army of Mississippi Casualties 4,211 3,196 The Battle of Perryville, also known as Battle at Perryville and Battle of Chaplin Hills, was an important but largely neglected encounter...

Further reading

Garrison Jr., Webb, Strange Battles of the Civil War, Cumberland House, 2001, ISBN 1-581-82226-X

External links

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• Acoustic shadow
• Civil War Acoustic Shadows