Cossack Rada (Ukrainian: Козацька рада, Kozats'ka Rada) or General Military Council was a general Cossack assembly (council) often military in nature. Originally established at the Zaporizhian Sich, the rada (council) was an institution of Cossack administration in Ukraine from the 16th to the 18th century. With the establishment of the Hetman state in 1648, it was officially known as the General Military Council until 1750.