He gave two of his Eisenach regiments into foreign service, for example in the Netherlands and in the Imperial Army. On October 17, 1740, he also promised his nephew by marriage, the Prussian king Friedrich II., another regiment, the later Füsilierregiment No.
He gave two of his regiments to international duty, including those in the Netherlands and within the Imperial Army. Furthermore, on October 17, 1740, he pledged another regiment to his son-in-law, the Prussian king Friedrich II., which would later become the Füsilierregiment No.