Hello to all
; something on this.........................................
The 10.5cm K18 auf Panzer-Selbstfahrlafette-IVa.
Faced with the proliferation of fortifications in Europe, especially the extensive Maginot Line, the Heer sought to acquire a Schartenbrecher (bunker demolition), whose initial task is to approach the French fortifications without too much risk and eliminate them with explosives. On April 25, 1940, two pre-production assault weapons were ordered for delivery in August of the same year. In January 1941, they were finally armed and, on March 31, a demonstration was held in front of Hitler and it was decided to send them to the front in order to obtain important conclusions based on experience before launching a mass production in the spring of 1942, as intended. The first two prototypes were designated as 10.5cm K18 auf Panzer Selbstfahrlafette IVa and were assigned to the Schwere Panzerjäger-Abteilung 521 which was subordinate to the XXIV. Armeekorps (Mot), within Guderian's 2nd Panzer Group for Operation Barbarossa.
On June 22, 1941 the schw. Panzerjäger-Abteilung 521 counted among the means at its disposal a Platoon with 2 x 10.5cm K18 auf Panzer Selbstfahrlafette IVa. In turn, the Platoon was organized according to the following scheme, kampfstaffel (combat echelon), munitions-staffel (ammunition echelon) and tross (logistics train).
Kampstaffel: Zug-trupp (Platoon commander), Geschütz-staffel (2 x 10.5cm K18 auf Panzer Selbstfahrlafette IVa), Luftschutz-kfz (anti-aircraft vehicle - Sd. Kfz 4) and Fernsprechwagen (communications vehicle - Kfz 15). Thanks to this weaponry, the Platoon can be used in direct and indirect fire.
The weapon is not equipped with complete cartridges, but the projectile and the cartridge are substantially separated. High-explosive grenades are fired with a large charge (Vo = 805 m / s) or with a medium charge (Vo = 635 m / s). 26 shots go in the tank destroyer and another 80 in an ammunition transport vehicle.
But the tests did not start well and on June 26, 1941, one of the vehicles was lost due to an explosion while marching in the direction of Sluck; the reasons for this explosion are not yet clear. It is possible that the explosion was caused by the ignition of the cartridges stored in the so-called antiaircraft protection cabin, since, according to the operator's statements, the detonation was caused by a flashing flame from said sector. The particularly high outside temperature that day, along with the heat emitted by the engine, likely caused a build-up of heat in this section.
The crew was able to get out of the vehicle when the first flash of flame was fired, so there is no loss of personnel. The vehicle rolled a few more steps and then stopped. There was an explosion in the vehicle shortly after the flame was fired and the detonation of grenades was heard shortly afterwards. As a result, the vehicle was completely destroyed.
Sources: Operation Barbarossa: the Complete Organisational and Statistical Analysis, and Military Simulation Volume I.
https://wwii.germandocsinrussia.org/de/ ... ect/zoom/6
Cheers. Raúl M
Serás lo que debas ser o no serás nada. General José de San Martín.