“ In 1717 Seckendorf once more entered the service of the emperor, with the rank of lieutenant field marshal, and he was present at the siege of Belgrade by Prince Eugene. In 1718 and 1719 he fought in Italy, and in the latter year he was made a count of the empire. In 1726, at the instance of Prince Eugene, he was made the Austrian representative at the court of Prussia. ”

“ Disappointed of promotion in Holland and Austria, he entered the Polish-Saxon army as a major-general, and fought as a volunteer at the siege of Tournai and the battle of Malplaquet. He continued to serve in Flanders to the end of the war, acted in a diplomatic capacity in the peace negotiations, and in 1713 suppressed an insurrection in Poland. ”

“ In 1693 he served in the allied army commanded by William III. of England, and in 1694 became a cornet in a Gotha cavalry regiment in Austrian pay. Leaving the cavalry he became an infantry officer in the service of Venice, and (1697) in that of the margrave of Anspach, who in 1698 transferred the regiment in which Seckendorf was serving to the imperial army. In 1699 he married and returned to Anspach as a court officer, but the outbreak of the War of the Spanish Succession called him into the field again as lieutenant-colonel of an Anspach regiment, which was taken into the Dutch service. ”