a Scottish Soldier and diplomat. He gained the positions of Imperial Field Marshal, Count of the Holy Roman Empire, Governor on the Croatian-Slavonian Military Frontier, Imperial Ambassador to Naples, Rome in 1645 and to Constantinople in 1665-1666. In 1624, Walter Leslie crossed the North Sea to fight with the Protestant Army of the United Provinces. By 1628, he was in Stralsund in Northern Germany fighting for either the Danes or the Swedes. In 1630, he transferred to the Imperial Army and fought alongside his countryman John Gordon that summer in War of the Mantuan Succession in Northern Italy, under the command of General Albrecht von Wallenstein.
