 The largest raids in history were the series undertaken during and following the Mongol invasion of Central Asia.Examples of lesser scale raids include those staged by the Cossacks of the Zaporizhian Sich, the Grande Armée, and cavalry raids that took place during the American Civil War such as Morgan's Raid, and numerous examples of small group raids behind enemy lines that have taken place throughout all periods of history.In the operational level of war, raids were the precursors in the development of the Operational Manoeuvre Groups in the Soviet Army as early as the 1930s.