The Wawelberg Group was organized by the Polish General Staff's Section II as the "Destruction Office" in the waning days of 1920 as rumors flew that the Inter-Allied Plebiscite Commission would grant almost all of Upper Silesia to Germany. Prompted by the rumors, the Polish Military Organization of Upper Silesia, which actively cooperated with the Polish Army, had begun forming a small, highly specialized unit which would come to be called the Wawelberg Group. The Destruction Office took the "Wawelberg" name from the nom de guerre of its commander, Captain Tadeusz Puszczyński — "Konrad Wawelberg." Puszczyński was a graduate of the Warsaw Polytechnic and had served in the World War IPolish Legions and in the Polish Military Organization. He had also participated in the 1920 Second Silesian Uprising. His crucial task was to find the right people and carry out acts of sabotage in the rear of the German positions. All the men in the Wawelberg Group had to be skilled combat engineers with extensive knowledge of explosives.
The Group
The Group's deputy commander was Lt. Edmund Charaszkiewicz. Puszczyński recruited, from among his soldiers, two officer cadets, the brothers Tadeusz and Janusz Meissner. All four men would later be decorated with the Virtuti Militari, 5th class, on June 27, 1922. Puszczyński divided his men into four teams — A, G, U and N. These designations came from the initial letters of the Polish phrase Akcja Główna Unieruchomienia Niemców. All the agents were armed, wore civilian clothes, and were provided with money. The men of the Wawelberg Group knew that, to overcome German military superiority in the area, they had to cut the rail and telegraph links between Upper Silesia and Germany. Therefore, the teams were deployed about the western part of Upper Silesia, ready to attack. Team G, 13 men commanded by Lt. Włodzimierz Dąbrowski, was deployed near Gogolin and ordered to watch the rail line between Krapkowice and Prudnik. Team U, 10 men commanded by Lt. Edmund Charaszkiewicz, was deployed on the border between Głubczyce and Prudnik counties, to keep an eye on the rail lines Głogówek – Racławice Śląskie – Prudnik, and Głubczyce– Racławice Śląskie. Puszczyński — "Wawelberg" — himself, with a small team, deployed in the deep rear of the German positions, at the village of Szczepanowice, some five kilometers west of Opole. Their task was to blow up the crucial 200-meter-long Oder River rail bridge.
Operation "Bridges"
The Poles' plan, Akcja Mosty, was implemented on the night of May 2/3, 1921. Puszczyński and his men, equipped with some 320 kilograms of explosives, after initial difficulties managed to destroy a span of the Szczepanowice bridge. The other groups also succeeded in their objectives. Altogether the Poles managed to destroy seven rail bridges at such places as Szczepanowice, Kluczbork, Kędzierzyn-Koźle, Głogówek and Świętochłowice. The blowing up of the bridges initiated the Third Silesian Uprising, the greatest and best-organized of the three. The Germans, taken by surprise, needed time to repair their severed communications and to transport their troops, and the Poles took advantage of the situation. All the major rail lines leading to Upper Silesia had been immobilized. Two German military rail transports had also been destroyed.
Aftermath
After the operation, most of the Polish agents managed to withdraw to Sosnowiec, which due to its proximity to the border was the main base of Polish operations. The Germans captured an unknown number of the men who had blown up the bridge at the village of Dobra; they were imprisoned for a few weeks at Opole. Also caught, near Głubczyce, were two Poles who were trying to make their way to Czechoslovakia, but the Germans did not know their identity and released them. The Germans announced, in the June 18, 1921 Amts-Blatt der Königlichen Regierung zu Oppeln, a reward of 10,000 Reichsmarks for information about the perpetrators of the attacks.