Owing to its strategic location, Tennessee was the main target of Union groups during the era of civil war in America. It was the lone Confederate state which was successfully brought under the control of Union armies. The invasion began in the year of 1862 which ultimately culminated with the defeat of Confederate forces. Western portion of Tennessee remained in the grip Federal forces for remaining period of war. After capturing Tennessee, martial laws were imposed in towns like Jackson, Columbia, Nashville, Memphis and so on. Hence the entire period of 1962 is a landmark event in the history of Tennessee.