[2] Rüse would be called to Denmark at the behest of Frederick III in 1661 in order to improve and expand the kingdom's fortifications after the destructive Second Northern War.

Scholten would therefore serve directly under his mentor at the construction, repairment, remodelling and improvement of fortifications in Schleswig, Holstein and Denmark proper.

In 1673 he became the leading engineer at Rüse's remodelling of the most important fortification in the duchies: the fortress city of Rendsburg in Schleswig.

Scholten was under the immediate command of a lieutenant general by the name of Giese, while the commander-in-chief of the whole invasion force was Ulrik Frederik Gyldenløve.

The first quartermaster general in charge of the Holsteiner Fortifications Service, Wolfgang William Romer, fell out of favour with the King for having hired unsuitable foreign officers for the new service, and Scholten took over as inspector-in-chief of the engineers and fortresses in Schleswig, Holstein, Oldenburg and Delmenhorst in the fall of 1685.

This defensive complex was built in the typical modern style of the age of Vauban, sporting a grand central parade ground with radial streets emanating from it.

Between 1690 and 1695 Scholten furthermore expanded the city's fortifications north with the new Kronværk, placing it where a small village on the northern Eider bank had lied previously.

[2] Scholten led the establishment of field fortifications and the siegeworks in many of the smaller feuds that were fought at Denmark's southern border in the last decades of the 17th century.

[5] Christian V moved with an army towards Hamburg in August of 1686 to force the affluent merchant city to swear fealty to him as their sovereign and hereditary monarch.

The Gottorpers were determined to make a stand at the redoubt defending Husum, and Scholten started construction sapping trenches on 8 April.

The column quickly took Friedrichstadt, and proceeded on to Tønning, where Ferdinand Vilhelm and Fuchs convened to surround the Gottorpers.

The siege started after weeks of bombardment and preparations on the night to 15 May, and Scholten now led the sapworks in unison with two other engineers, Fuchs being one of them.

Scholten's last act during this early phase of the war was to assume command of some 600 peasants that were conscripted on King Frederick IV's orders.

A few months later the War of Spanish Succession broke out, and Scholten was appointed second-in-command of the Danish Auxiliary Corps in Anglo-Dutch service.

The approximately 135-strong French garrison defended only the castle, but abandoned that too after two days, after obtaining free passage to Roermond.

The Duke of Marborough, dissatisfied with the gains made that year, hoped to be allowed to plan an attack on the fortified French lines defending Brabant.

The generals of the right wing of the army, including Scholten and the most senior Danish commander, the Duke of Württemberg, supported Marlborough.

However, the left wing consisting mainly of Dutch generals, such as Nassau-Ouwerkerk, Dopff and Albemarle, but also, for example, the Dane Jørgen Rantzau, was strongly opposed to they plan.

Marlborough, in a letter, later advised Scholten to apologise, as he believed the field deputies and Nassau-Ouwerkerk were displeased by his action.

[23] Later that year, at the eve of the Battle of Elixheim, he led Noyelles' right-wing column, which broke through the lines at Over- and Nederhespen without a fight.

[25] At the capture of Oudenaarde, later that year, it was the arrival of Scholten and his troops that made the governor of that city decide to surrender.

Secondly, the war was moving into a phase were battles would be rare and sieges would be common, so Scholten's engineering expertise would be needed.

The Danish reconstruction efforts were a success, and in the late summer of 1711, Scholten could take his place at the head of an army of 30,100 men in Holstein.

[32] Scholten and his staff broke up from Holstein and marched onwards into Mecklenburg with the intent of sieging down Swedish Wismar.

[33] The attempt to take Stralsund in 1711 would fail due to the inability of the Danish Navy to transport the necessary siege artillery to Pomerania that autumn.

In February 1712, Scholten suggested of King Frederick that a commission be set-up to decide the plans for the coming campaign season.

[35] Scholten was appointed as Governor-General of Bremen-Verden by Frederick IV following this victory, though the everyday running of the province's affairs would be managed by a corps of Danish bureaucrats.

But the discussion had gone on for so long that it was now morning, and the Swedes attacked just as the Danish and Saxon lines were reorganising, thus creating a great deal of confusion amongst the allied ranks.

Scholten sensed disaster, and he felt forced to ride over to the left flank in an attempt to stop the Saxon squadrons from fleeing.

[43] Scholten and Flemming feuded with Vellingk over the Burning of Altona[l] during their time in the port city, and they would also convince Czar Peter to continue his pursuit of Stenbock.