Jagdpanzer Kanone Jpz 4-53

Kanonenjagdpanzer
The Kanonenjagdpanzer 4 - 5 (also known as Jagdpanzer Kanone 90mm, or tank destroyer, gun) was a German Cold War tank destroyer equipped with a 90mm anti-tank gun from obsolete M47 Patton tanks. Its design was very similar to that of the World War II Jagdpanzer IV.

History
The first prototypes of the Kanonenjagdpanzer were built in 1960 by Hanomag and Henschel for West Germany and by MOWAG for Switzerland. Hanomag and Henschel continued to produce prototypes, until between 1966 and 1967, 770 were built for the Bundeswehr, 385 by Hanomag and 385 by Henschel. Eighty of them were delivered to Belgium from April 1975 onward.

When the Soviets began deploying their T-64 and T-72 main battle tanks, the 90 mm gun wasn't capable of ensuring long-range combat and the Kanonenjagdpanzer became obsolete. Although the producers claimed it could be rearmed with a 105 mm gun, between 1983 and 1985, 163 of these tank destroyers were converted into Raketenjagdpanzer Jaguar 2 anti-tank guided missile carriers by removing the gun, adding a roof-mounted TOW missile launcher and fastening further spaced and perforated armour on the hull. Some others were refitted by removing the main gun into artillery observation vehicles, so called Beobachtungspanzer, which served most particularly in the mortar units.

Some Kanonenjagdpanzer remained into service with the Heimatschutztruppe until 1990.

Design
The Kanonenjagdpanzer was a highly mobile vehicle, its survivability based on its mobility and its low profile. Its hull consisted of welded steel, which had a maximum thickness of only 50 mm. It carried a crew of four, a commander, driver, gunner and a loader. Since the Kanonenjagdpanzer followed the casemate design of most World War II tank destroyers, the gun was fixed within the casemate, located a little right from the center. The 90 mm gun could only traverse 15° to the sides and elevate from -8° to +15°. It carried 51 90 mm rounds for the main gun and 4000 7,62 mm rounds for the two MG3s. The Kanonenjagdpanzer had NBC protection and night-fighting ability.

Source : Wikipedia

In the left background, we can see a GFM cloche made by Cockerill in the year 1935. It was a fixed and non-retractable firing position made of a 20 tons thick iron casting which shielded its occupant.
GFM is an acronym for Guetteur et Fusil-Mitrailleur, (lookout and rifle-machine-gunner), which describes its purpose as a lookout and firing position for light weapons.