Origins of the Fortifikationsstaten was carried out
Fortifikationsstaten traces its origins to 1635. However, even before that, military engineers—initially mostly foreigners—were employed in Swedish service, both in peacetime and on the battlefield. These engineers were known as "byggmästare" (master builders) in peacetime and "lägermästare" (camp masters), "vallmästare" (rampart masters), and "skansmästare" (redoubt masters) in the field. From 1579, titles such as "generalkvartermästare" (
Quartermaster General), "generalkvartermästarlöjtnant" (Lieutenant Quartermaster General), and "överstekvartermästare" (Senior Quartermaster) were introduced. During the reign of
Gustav I and his sons, several prominent military builders played key roles in fortification efforts. Among them were:
Henrik von Cöllen, Anders Larsson (Målare), , Hans Mess de Porte,
Arendt de Roy, Lodwich van Hoffwen, Paar brothers,
Willem Boy,
Hans Fleming, Jakob von Stengelen, , Arendt and Mauritz Asserij, , Hans Stuart, , , Peter Nicolaus de Kempe, Hero Janss, Hans Nykyrkie, , and . These engineers were responsible for constructing or rebuilding numerous castles and fortifications, including:
Gripsholm,
Uppsala,
Vadstena,
Örebro, 's and
Nyköping' Castles,
Vaxholm,
Kalmar Castle and city,
Älvsborg, ,
Gothenburg on
Hisingen,
Borkholm,
Stäkeborg, and Sconces,
Viborg,
Nyslott,
Tavastehus,
Åbo Castle and
Kajaneborg,
Keksholm, Narva,
Jama and
Nyen,
Reval,
Weissenstein and
Vasknarva,
Pernau,
Fellin,
Dorpat,
Wolmar,
Marienburg, and Salis.
Formation of Military Engineering Units For a long time, military engineers—especially those based in Sweden—were not grouped into any organized military unit but were instead hired individually. This changed in 1612 when Johan van Monickhouen arrived from the Netherlands, accompanied by engineer Andreas Sersanders. In 1613, Sersanders was sent back to the Netherlands to recruit additional engineers and returned with eight
conductors. As more military engineers entered Swedish service, King
Gustavus Adolphus began forming field fortification units (
fältfortifikationsstater). This allowed fortresses to have permanent fortification personnel. However, these personnel were not yet placed under a unified command—an idea Gustavus Adolphus had considered as early as 1617. Instead, they were assigned to the artillery. Meanwhile, the field fortification units were led by officers with titles such as "fältkvartermästare" (Field Quartermaster), "överstekvartermästare" (Senior Quartermaster), and later "generalkvartermästare" (Quartermaster General). Notable Quartermaster Generals included: Reinhold Taube, Monickhouen, Robert Myr och
Patrick Ruthven (during the
Russian War), Hans Fersen,
Georg von Schwengeln and
Georg Günther Kraill von Bemeberg (during the
Polish War), Frans de Traytorrens, and (during the
German War).
Military Engineering During Gustavus Adolphus's Reign During
Gustavus Adolphus's reign, significant contributions to military engineering were made by: Hans Fleming, Daniel Brandt, Hero Janss, Andreas Sersanders, Anders Gooson van der Maa, Paul von Essen, Jost van Wierdt, Johan von Arendz, Johan Schultz, and Hindrich Thome. These engineers contributed to the construction or improvement of fortifications at: Jönköping, Kalmar, Älvsborg, Gullberg, Gothenburg, Nyslott, Viborg, Keksholm, Nöteborg, Nyen, Narva, Reval, Pernau, Riga, Kobron Sconce,
Dünamünde, Dorpat,
Kokenhusen, and Evst Sconce. They also played a role in city planning, including demarcating
Falun,
Kalmar,
Gothenburg, and
Jönköping. Among the numerous fortifications built by Gustavus Adolphus's field engineers were:
Mitau,
Birsen and
Bauske,
Pillau,
Braunsberg,
Elbing,
Marienburg,
Danziger Haupt and ,
Stralsund,
Peenemünde,
Stettin,
Demmin,
Schwedt,
Werben,
Mainz,
Gustavsburg, and
Nuremberg.
The Establishment of the Quartermaster General Position became Sweden's first Quartermaster General in 1631 In 1631, the first Quartermaster General was appointed in Sweden—
Georg Günther Kräill von Bemeberg. However, he does not appear to have been the head of the fortifications personnel within the artillery, nor did he oversee the kingdom's permanent defenses. The need for such a position, recognized earlier by Gustavus Adolphus, remained, and in 1634, Olof Hansson, who had returned to Sweden, was appointed Quartermaster General "over the fortifications." He was placed in charge of the fortifications personnel, which at the time consisted of two engineers, four conductors, and eight workmaster
journeymen. However, Hansson was dispatched to
Prussia and
Livonia but returned the following year, was ennobled under the name Örnehufwudh, and received a renewed appointment as "Quartermaster General and over all fortifications." His authority extended over all engineers, master craftsmen, and conductors employed in fortress construction, under the artillery command. With this, the fortifications personnel—now expanded to three engineers, one master craftsman, eight conductors, two copyists, and one clerk—was organized into a separate corps under a Quartermaster General, though still formally under the artillery command until 1641. That year, the fortifications corps was separated from the artillery and became an independent unit under the
War College, and later, as a fully separate entity.
Fortification Works and Expansion During Örnehufwudh's tenure, fortification works continued at Gothenburg, Älvsborg, and Jönköping, while new works began at Kalmar and
Ryssås Redoubt. Cities such as Stockholm,
Norrköping, and
Viborg were regulated, and new settlements like
Alingsås,
Helsinki,
Åmål, and
Vänersborg were established. Other construction efforts included sluices at
Lilla Edet. In
Kexholm County and
Ingermanland, fortifications were led by engineer , while in Estonia and
Livonia, General Engineer Johan von Rodenburg oversaw works, including the rebuilding of Nymünde. After Örnehufwudh's death in 1644, succeeded him, holding the post until his death in 1674. He was briefly succeeded by , who soon transitioned to the artillery. That same year,
Erik Jönsson Dahlbergh was appointed Quartermaster General. By 1674, under Wärnschiöldh, the fortifications corps had grown to include a Quartermaster General, two lieutenant Quartermaster Generals, four engineers, seven conductors, a German carpenter, a cashier, and a materials clerk. However, this force was focused solely on Swedish fortifications. The and German territories had their own fortifications personnel, largely independent of the Swedish Quartermaster General. Over time, these formed separate fortifications corps under their own General Engineers, Chief Engineers, or Quartermaster Generals.
Centralization of the Fortifications Corps In 1680, fortifications in the Baltic provinces were placed under Swedish command, followed by the German territories in 1681. Under Dahlbergh's leadership, the fortifications corps expanded significantly, growing to 99 officers, 66 civilian staff, and 276 craftsmen by his death in 1703, totaling 441 personnel divided into regular and extraordinary staff. Initially, the service regulations for fortifications personnel were based on temporary instructions. However, in 1653, a formal "Fortifications Ordinance" was issued by the
King in Council, later revised in 1658, 1666, and 1695. These regulations detailed fortress construction, financial management, and more, though they did not cover other common duties of fortification officers, such as cartography, city planning, and canalization projects.
Field Operations and Wartime Roles During wartime, the standing fortifications personnel were needed at headquarters and fortresses. As a result, separate field fortifications units were sometimes formed, to which regular or extra personnel could be assigned. The Quartermaster General occasionally took part in field campaigns, as seen with Örnehufwudh in
Scania and
Halland (1644), Wärnschiöldh (1657), and Dahlbergh during the
Danish War (1675–79). When the Quartermaster General did not personally enter the field, special field Quartermaster Generals or Lieutenants were appointed for each army. Notable among them were Paulus Morsheuser,
Conrad Mardefelt, and
Simon Grundel-Helmfelt during the
Thirty Years' War, as well as Mardefelt, , and Dahlbergh under
Charles X's campaigns. During the
Great Northern War, and
Axel Gyllenkrok were among those leading fortifications efforts.
Leadership Changes and Further Development Dahlbergh, who reported directly to the King as the "National Quartermaster General," (
riksgeneralkvartermästare) was transferred to Livonia as governor. Carl Magnus Stuart assisted him in overseeing fortifications, and upon Dahlbergh's death in 1703, Stuart assumed full responsibility. Stuart died in 1705, and in 1706, his son-in-law Magnus Palmqvist succeeded him as Quartermaster General and Director of Fortifications. In 1719, Palmqvist was appointed governor and was replaced by
Axel Löwen.
Wärnschiöld's Era was constructed during era (1644–1674) During Wärnschiöld's time, the fortification of several key locations continued or began. These included Kalmar, Gothenburg with Ryssås, Vänersborg,
Vaxholm,
Halmstad,
Bohus, and the Skåne fortresses, as well as several others in Sweden,
Kexholm, and the Ingrian fortresses. Additionally, fortifications were built at
Vasknarva, Reval, and
Arensborg, along with several in Livonia, including
Demmin,
Stettin,
Damm,
Anklam, and
Greifswald in
Pomerania, as well as at
Warnemünde and
Wismar, along with fortresses and entrenchments in
Bremen. New constructions during this time included
Billingen, Kyrkogårdsholmen,
New Älvsborg, Andersö Skans,
Karlsvärd, Eda Skans, Bodekull,
Karlshamn,
Dalarö Sconce,
Marstrand,
Kirkholm, Geestendorf, and Karlsburg.
Dahlbergh's Era Under Dahlbergh's leadership, nearly all the fortifications maintained or unfinished up until that point in the vast Swedish realm were either strengthened or rebuilt. Fortifications such as
Kronan and
Göta Lejon, Karlskrona with Kungsholmen and
Drottningskär, and , among others, were constructed. Major works continued on Vaxholm, Dalarö, Kalmar, Karlskrona,
Malmö,
Landskrona, Gothenburg, New Älvsborg, Bohus, Marstrand, Viborg, Riga, Kobron, Pernau, Reval, Narva, Nyen,
Nöteborg, Kexholm, Stettin, Damm, Stralsund, Peenemünde, Wismar,
Stade, and in the fortifications of
Kurland, where a separate fortification state was established.
Palmqvist's Era During Palmqvist's time, there was a reduction in building allocations, but work continued on several of the aforementioned fortifications, except those already lost to Sweden. Efforts were also made for the defense of Stockholm,
Kristianstad, Halmstad,
Varberg,
Uddevalla Skans,
Strömstad,
Sundsborg, Eda Skans,
Frösö,
Hjärpe,
Dufeds, , Gotland's defense, and Arensborg and Nymünde.
Löwen's Leadership and Organizational Changes (1686–1773) was head of the corps from 1719 to 1739 Under Löwen's leadership, following the wars and significant land concessions, the fortification state was reorganized. By 1721, in accordance with a proposal by Stuart, the fortifications were divided into five brigades: •
Stockholm and its province,
Södermanland, and
Östergötland •
Småland,
Blekinge, and
Gotland •
Scania and
Halland •
Gothenburg and Bohus County •
Finland Later, the Stralsund fortification state was added to these five brigades. An extraordinary state for craftsmen was also introduced at this time. The personnel at this stage consisted of 60 officers, 20 civilians, and 33 craftsmen, totaling 113 individuals. In 1735, 13 extraordinary officers were added. This structure remained largely unchanged until 1778, though the personnel fluctuated slightly during this period.
Changes in Staff and Structure From 1739, under , the title of "vallmästare" (battalion master) was changed to "underkonduktörer" (under-conductors), and they formed the core of a fortifications non-commissioned officer corps. This was something Stuart had previously attempted. Under , who succeeded Stobée in 1741, a few "adjutants" were added to the corps, later equated with conductors and thus officers. From 1768, a small number of sergeants and some corporals were also added, though they were soon removed. Notably, two colonel positions were added in 1762, and by 1764, a professor's position was established to increase the teaching staff at the information office, which had been training fortification officers for over a century.
Further Organizational Changes (1778-1806) In 1778, Sweden's fortification brigades were reduced from four to three:
life brigade Stockholm, Västgöta, and Skånska. Each brigade, including the Finnish, was organized into staff, with the life brigade consisting of 7 officers and 7 civilians, while the others had 4 officers and 5 civilians each, and company staff consisting of 10 officers and 12 non-commissioned officers per brigade. The Stralsund fortification state was now known as the Pomeranian Brigade (
Pommerska brigaden). In 1785, certain positions were swapped without affecting the overall budget. By 1798, the brigade structure was abolished, and fortifications were reorganized into an ordinary state consisting of staff, company, information, and civilian states. This totalled 51 officers, 8 non-commissioned officers, and 21 civilians. An extraordinary state, designed to be reduced upon vacancies, was also established. In 1806, following the separation of the field surveying component (
fältmätningsdetaljen) from the corps, the title "Generalkvartermästare och direktör" was replaced by "Chef för Fortifikationen" (Head of Fortifications).
The Evolution of the Fortification Directorate and Its Responsibilities From its inception, the primary task of the Fortification Corps was to oversee all fortification construction within the kingdom, which was managed under the direction of the Quartermaster General (
generalkvartermästaren). However, in 1727,
King in Council granted General Baron B. O. Stackelberg "full control over fortifications and fortification works in Finland," which were considered the most important and therefore required a higher-level officer on-site. This separation, however, seems to have occurred with Löwen's approval, possibly at his direct instigation, and did not last long. Stackelberg died in 1734, and in 1737, Löwen himself became the commanding general in Finland, while still retaining his position as Quartermaster General.
Separation and Restructuring of Fortification Tasks At the urging of the , new fortification works in Finland were once again separated from the Fortification Corps in 1747, and those in Scania in 1748. These works were placed under the supervision of Lieutenant Colonel
Augustin Ehrensvärd for Finland and Count H. H. von Liewen for Scania, both under the king's "own direction and oversight." In 1753, the fortification of
Karlsvärd was also separated from the Fortification Corps. Cronstedt, unhappy with this unflattering treatment of him and the Fortification Corps, appealed to the
Riksdag of the Estates, but in 1756, his grievances were deemed unfounded, and King in Council also concluded that Cronstedt "was wrong and at fault," though they decided to "nobly overlook a weakness that seemed less a result of his own intent than of others' malicious advice."
Continued Political Weakness and Leadership Transitions This "political weakness" of the Fortification Corps persisted even after Cronstedt's resignation in 1757. It continued through the years until 1762, when the director's position was left vacant (Colonel was acting director), as under first time as director. However, in 1762, the Fortification Corps regained control of Karlsvärd, and when
Caps rose to power in the 1765 Parliament, both the Finnish and Scania fortifications were transferred to the Fortification Director, as the "king's rightful man." The Finnish fortifications, however, remained under this new leadership only until 1770, when the
Hats, to whom Ehrensvärd belonged, became the ruling party and reinstated him to lead these works, though with somewhat restricted authority.
Changes in Leadership and the Return of Finnish Fortifications Virgin, who was not willing to accept this change, resigned in 1769 and was succeeded by , who, in 1772, regained control of the Finnish fortifications. Strussenfelt resigned in the same year, and in 1773, leadership passed to , who handed it over to in 1784. When Hermansson resigned in 1791, became Quartermaster General and Director.
Further Structural Changes and the Expansion of Responsibilities That same year, the fortifications in Scania were partially placed under the direction of Major General
Johan Christopher Toll, but they returned under Mannerskantz in 1792. From that point on, as expected, the head of the Fortification Corps continuously held leadership and responsibility for all fortifications and related works across the kingdom. Additionally, barracks, supply buildings, and other military structures were planned and constructed by the Fortification Corps. Hermansson's request to assign the construction of civil "public buildings" to fortification officers, as was often done in the 1600s, was, however, only met to a limited extent.
Fortification Works After the Time of Charles XII began in 1748 Among the fortification projects carried out after the time of
Charles XII, notable examples include the reinforcement or reconstruction of , fortifications in the
Stockholm Archipelago, Kalmar, Karlsvärd, Karlskrona with Kungsholmen and Drottningskär, Karlshamn, Kristianstad (from 1748), Malmö, Landskrona (from 1748), Varberg, Gothenburg,
New Älvsborg,
Bohus, and
Carlsten in Sweden, as well as
Kajaneborg, Nyslott, and
Tavastehus in Finland, and Stralsund in Pomerania. Newly constructed fortifications included on
Värmdö (1724–35), , at Marstrand,
Villmanstrand, Vekkelaks or
Fredrikshamn (from 1722), Degerby or Lovisa (from 1744),
Svartholm (from 1748),
Helsingfors (1748–50),
Suomenlinna/Sveaborg (from 1748), and the fortifications at
Hangö (from 1789). On the other hand, fortifications at Halmstad were dismantled in 1734, and those in Malmö and Gothenburg were removed in 1806.
Changes in Leadership and Structure of the Fortification Directorate Mannerskantz was succeeded by Nils Cedergren, but he resigned in 1811, and Gustaf Wilhelm af Tibell became Quartermaster General and head of the Engineer Corps (
Ingenjörkåren), which the Fortification Corps was now referred to as. This corps, which also received a vice chief (
souschef), had been merged with the Field Survey Corps (
Fältmätningskåren), established in 1805. It consisted of a fortification brigade with 26 officers and 10 non-commissioned officers, a field surveying brigade with 16 officers, an intelligence division with 1 professor and 2 intelligence officers, a civilian staff with 1 secretary, 1 clerk, and 9 material accountants (the Fortification Treasury (
Fortifikationskammarkontoret) had been transferred to the
Royal Swedish Army Materiel Administration), as well as a few additional ordinary craftsmen. The lowest officer rank was now
underlöjtnant instead of conductor or adjutant. In 1812, when Tibell resigned and took over, the title of Quartermaster General was abolished permanently.
Further Organizational Changes and the Rise of Engineer Troops In 1831, the Field Survey Brigade (
Fältmätningsbrigaden) merged under the name Topographical Corps (
Topografiska kåren) with the
General Staff under the command of the army's general adjutant (
generaladjutanten för armén), and the remainder of the Engineer Corps became known as the
Swedish Army Fortifications Corps. However, the previous name was regained the following year. The corps’ leader, now transferred to the general's corps (
generalitetet), was called 'General of Fortifications and Head of the Engineer Corps.' In 1834, craftsmen were excluded, and in 1845, the conductor title was introduced for a higher non-commissioned officer rank, with the lower rank being sub-conductor.
Death of Key Figures and Expansion of Military Units After the death of Franc-Sparre in 1837, he was succeeded by Henrik Georg av Melin, who died in 1839. Johan Lefrén then became the General of Fortifications. In 1847, he was appointed Commander-in-Chief and was succeeded as head of the Engineer Corps by Karl Fredrik Meijer. Up until then, no engineering troops had belonged to the Fortification Corps, though
pioneer companies dependent on it had been established time and again, only to disappear shortly thereafter. However, in 1855, a
Sapper Company was formed, followed by a second in 1864, and a third in 1867, when the unit was renamed the
Pontoon Battalion. Additionally, a
Field Signal Company began forming in 1871, and a
Sapper Battalion with 3 companies was established in 1873. Since the command of these troops was to be given to the Engineer Corps, which, with the return of its old name the Fortification Corps in 1867, had gradually increased to 62 officers and 54 non-commissioned officers by 1878 (now referred to as
fanjunkare and
sergeant), along with doctors, quartermasters, and regimental chaplains. ==1892–1937==