The back breaking job of loaders of heavy siege guns is amply illustrated in this photograph. The gun is the schwere 24cm Kanone(t) and the crew belonged to the 2. Bataillon, Artillerie Regiment 84, Heeresgruppe Nord. As for the date and location, the photograph was taken sometime in September 1941 in Russia during the opening weeks of the Siege of Leningrad which ran from September 8, 1941 to January 27, 1944. The battalion consisted of three batteries, each battery being equipped with two of these massive guns.
The gun itself, however, was not of German manufacture. The gun was designed by Škoda, which was then located within the Austrian Empire, based on a request in 1916 by the Austro-Hungarian Army. The request was for a gun capable of demolishing targets far behind enemy lines as the current heavy siege guns in service lacked the desired range. Škoda, in order to save both development time and material resources, constructed the new 24cm Kanone M. 16 in parallel with the larger 38cm Belagerungshaubitze M 16 and so the new gun utilized the same horizontal sliding-block breech, gun carriage, and firing platform as the bigger weapon. Construction began in 1916 but only two examples were completed before the end of World War One. Another six were constructed between 1918 and 1921 and were used by the Czechoslovakian Army. When Germany, in 1938, annexed Czechoslovakia, the German Heer (Army) purchased the six guns from the Czechoslovak government and put them into service as the schwere 24cm Kanone(t).
Deploying the schwere 24cm Kanone(t) was a long, laborious task. For transport, the gun was broken down into four loads (barrel, carriage, and two halves of the base box), each carried on an eight-wheeled, electrically powered trailer. Each trailer was pulled by a Austro-Daimler Artillerie-Generator Zugwagen M. 16. These specialized trucks were fitted with two electric generators which were powered by the truck's 6-cylinder gasoline engine. The generators provided power to the truck's rear wheels and drove the electric motors in each of the trailer's eight wheels. A fifth truck towed an ammunition trailer that carried 28 complete rounds plus a loading crane. Top speed of the gun train was just under 9mph. For longer distances, the entire gun train was moved by rail via locomotive. Once a firing site was chosen, ground depending, it took 8 to 20 hours to prepare the firing pit to accept the assembled base box. Using a series of jacks and guide rails, the two halves of the base box were connected then lowered into the pit. The entire base box measured 21ft. long, 17ft. wide, and 4.6ft. high. Once the box was in place, it took another 6 to 8 hours to assemble the gun. The carriage was moved into position, jacked up to allow the trailer to be removed, then it was lowered to the base box and bolted down. Block and tackle was used to lift the barrel from the trailer then fit the barrel onto the carriage with the final steps being the connection of the recoil brake pistons, filling the recoil system with hydraulic fluid, then testing the entire recuperator mechanism. The combat weight of the schwere 24cm Kanone(t) totaled 95 tons.
The schwere 24cm Kanone(t) rested on a turntable fitted to the base box that allowed the gun to be traversed a full 360 degrees. Elevation was a maximum of 41 degrees and a minimum of 10 degrees. Each shell weighed 437lbs. and consisted of the shell itself and a separate, 43lb. cased powder charge. The photograph depicts the gun just after firing with one loader removing the spent cased charge, smoke still issuing from it. The size of the case is quite evident in comparison to the loader. The gun has already been lowered to 6 degrees to permit reloading and behind the loader, three men are prepared to move the projectile into the breech with the aid of a roller race. The shell was put onto the race via a crane, not seen in this photograph. Once the loader was clear, the race was pushed forward and the three men shoved the projectile into the gun. This was followed by the powder charge. Once the breech was closed, the gun was elevated back up to its original firing position and upon the order to fire, the gunner pulled the lanyard, sending the projectile down range. The schwere 24cm Kanone(t) was capable of a maximum range of 16 miles thanks to its 2,600 feet per second muzzle velocity. A skilled crew could fire one round every minute.
Prior to deploying to the Eastern Front, the battalion had been positioned on Cap-Gris-Nez, Pas de Calais in France to interdict British shipping within the English Channel as well as provide protective fire for Kreigsmarine ships operating in the channel. By June 1942, the barrels of the battalion's guns had worn out and were shipped back to Škoda for refurbishment of the barrels and repairs of the gun components and equipment. Usage of substandard metals caused one of the barrels to rupture during testing which caused considerable delay in the refitting. It would not be until July 18, 1943 did the battalion receive two refurbished guns, enough to equip a single battery. The unit was deployed back to the Eastern Front, again under Heeresgruppe Nord. Another two guns arrived in January 11, 1945 to equip a second battery but four would be the total the battalion would get. The battalion continued to see action but would eventually be caught up in the Courland Pocket, surrendering on May 10, 1945 to the Soviet Army.