Sunday, August 22, 2021

British Stuart: Ad Hoc 18-pdr Field Gun Portée

From British and American Tanks of World War Two by Peter Chamberlain and Chris Ellis.

      Although the M3 light tank was U.S. designed and built, it was the British who first took it into action during Operation Crusader which commenced on November 18, 1941 in northern Africa. In British service, the M3 was known as the Stuart and for Operation Crusader, 170 Stuart I light tanks were included in the order of battle for the British 8th. Army. As the battle unfolded, units equipped with the Stuart suffered significant casualties. This, despite the fact the Stuart compared very favorably against two of the most common Axis tanks, the Panzerkampfwagen III Ausf G and the Italian Fiat M13/40. Against the former, the two tanks were evenly matched in terms of speed and armor protection and both the Stuart's 37mm M6 gun and the PzKpfw III's 3.7cm KwK 36 gun could knock the other tank out from over 1,000 meters. Against the Fiat, the M3 dominated the Italian medium tank and the Stuart was invulnerable to the 47mm Cannone da 47/32 AT gun from 1,000 meters and beyond whereas the Stuart could penetrate the M13/40 almost anywhere at that range. Analysis following the Allied victory against Axis forces on December 30, 1941 showed that the high casualty rate had more to do with the skill of German tank crews and superior tactics. The British also found that the two-man turret of the Stuart was problematic, to the point that some Stuart crews tried to squeeze a third man in to facilitate gun handling. The Stuart also did not have a high fuel capacity in comparison to some British tanks (such as the Crusader) which limited its range to only 75 miles. Still, the British appreciated the mechanical reliability of the Stuart and excellent speed. Nevertheless, by mid-1942, the British relegated the Stuart to reconnaissance tasks only, avoiding tank-vs-tank combat wherever possible. The British continued to use the Stuart throughout World War Two. Subsequent models were the Stuart II (Guiberson diesel engined M3), Stuart III (M3A1), Stuart IV (Guiberson engined M3A1), Stuart V (M3A3), and the Stuart VI (M5 and M5A1).

     The British also used a number of variants of the Stuart and two of the most common were the Stuart Recce and the Stuart Kangaroo. The Stuart Recce removed the turret which lowered the profile of the tank and lowered the weight of the vehicle which in turn, improved range. The Stuart Kangaroo also removed the turret and the vehicle was used as an armored personnel carrier (APC). There is debate on if the name “Kangaroo” was ever applied to the Stuart like it was to other similar vehicles derived from the M7 Priest, M4 Sherman, and Canadian Ram tank. These APCs were mostly used by British engineer units attached to armored brigades. A third, relatively common variant, was the Stuart Command which was also a turret-less Stuart but utilized by commanders and was equipped with additional radio equipment.

     This, then, brings us to the subject of the photograph. It depicts a one-off modification to a Stuart in which a British Ordnance QF 18-pounder field gun, sans wheels, was fitted to a simple bracket mount in place of the tank's turret. Although many of these guns were converted into the improved QF 25-pounder gun prior to World War Two, a number of the older guns (which entered service in 1904) remained in service and saw action during the opening stages of the North African campaign. Whether this ad hoc self-propelled gun (or portée) was ever used in action remains unknown but it was certainly constructed during the North African campaign in 1941-42. An examination of the mounting suggests that the gun was centered on the upper hull with the box trail extending over the opening left by the removal of the turret. This would allow the gun to be elevated to a maximum of 37 degrees and permit recoil. Of course, this assumes the gun is the Mk. III or Mk. IV model. If, on the other hand, the gun was an older Mk. I or Mk. II with a single, central trail, then the maximum elevation was only 16 degrees. The gun crew would have operated the gun without the benefit of all-around protection with the only measure of defense coming from the gun shield. It appears that two of the three hull machine-guns (one front hull mounted and one in each side of the upper hull) were removed, likely to make room for ammunition. This left only the front hull machine-gun. If the intent was to provide mobility for the gun and its 6.3 mile range was its defense from enemy attack, then having the additional machine-guns wasn't needed and if need be, crew small arms could also be utilized for close-in defense. How much ammunition the modified Stuart could carry isn't known though with the shell being a little over 1 foot long, an adequate supply could likely have been stowed if the machine-guns and the ammunition for them was removed. How the crew entered the SPG is also not known. It may have been possible for the crew to slip underneath the trailing arm or perhaps the trailing arm was not secured to the rear deck and the gun could be tilted upward to permit the crew to enter. Certainly in action, three men would likely have been crewing the gun from the deck while another remained in the tank, passing ammunition up through the opening where the turret had been. Some have said the modified Stuart was used as an assault gun, utilizing the gun for infantry support in the direct fire role. However, this is unlikely given the high profile of the SPG, the lack of armor protection for the gun crew, and the relatively light armor of the tank itself.

Private: Army Service Forces


     A studio portrait of an enlisted man with the rank of private following his graduation from basic training at Fort Monmouth in 1943. Fort Monmouth, once located in Monmouth County, New Jersey, was home to the U.S. Army's Eastern Signal Corps Training Center. The center contained the Eastern Signal Corps Schools for enlisted, officer candidate, and officer personnel as well as the Replacement Training Center. The latter was housed in Camp Charles Wood which, along with Camp Coles and Camp Evans, were encompassed within Fort Monmouth's boundaries. The officer candidate Signal Corps school was the “bread and butter” of the facility, graduating a little over 21,000 men as newly commissioned second lieutenants between 1941 and 1946. Also housed at Fort Monmouth during World War Two was the U.S. Army's Film Training Lab.

     The private excelled at marksmanship during his training as evidenced by the Marksmanship Qualification Badge worn on the left coat pocket. He achieved the lowest grade, that of Marksman, as evidenced by the plain award. Beneath it are three clasps, denoting what he earned the badge in. The top clasp is Rifle, the clasp below it is Machine Gun, and the third clasp is Carbine. To receive the clasps in each weapon class, he had to meet a specific number of target hits at various ranges and in different positions. Other common wartime clasps included Pistol, Bayonet, Grenade, BAR (Browning Automatic Rifle), and Submachine Gun among others. As a note, the next highest grade of the badge was Sharpshooter which included a round target on the badge while the highest grade was Expert and that badge consisted of a Sharpshooter Badge encompassed by laurels. The patch on his shoulder is that of the Army Service Forces and a part of that organization included the six technical services of the Army: Corps of Engineers, Ordnance Department, Quartermaster Corps, Chemical Corps, Medical Corps, and the Signal Corps. The private is a part of the Signal Corps as evidenced by the branch insignia of the Signal Corps on the coat's lapels. The insignia is that of two key components of a wigwag kit that consisted of two wigwag flags and a torch (the rest of the kit contained kerosene for the torch and a signal flare). Wigwag, more properly known as aerial telegraphy, was a method of flag signaling developed by U.S. Army surgeon Albert J. Myer who would become the very first commanding officer of the Signal Corps which was established on June 21, 1860. Thus, the significance of using the flags and torch as the branch insignia.

     As for Fort Monmouth, following World War Two, the Pigeon Breeding and Training Center was added to the campus though it was closed in 1957. The Signal Corps itself left Fort Monmouth in the 1970s, making its new home at Fort Gordon, Georgia. What remained was the Communications-Electronics Command Life Cycle Management Command (CECOM LCMC), the 754th. Explosive Ordnance Disposal Unit, Joint Interoperability Test Command, United States Military Academy Preparatory School (USMAPS), and the Patterson Army Health Clinic. Unfortunately, Fort Monmouth fell to the ax of the Base Realignment and Closure (BRAC) process and after all of the entities on the fort were relocated, Fort Monmouth was officially closed on September 15, 2011. Given the length of time the BRAC process took, then New Jersey Governor Jon Corzine signed the Fort Monmouth Economic Revitalization Act on April 28, 2006 that established the Fort Monmouth Revitalization Planning Authority in order to guide the redevelopment of Fort Monmouth and the land it sits on following its closure.

Panzerkampfwagen III Ausf L: SS-Panzer Regiment 5


     The Panzerkampfwagen III (PzKpfw III) was one of the most numerous, indigenous tank designs within the German panzerwaffe. The design of the tank was a result of efforts by then Lieutenant-Colonel Heinz Guderian to mechanize German tank forces and develop mobile armored warfare, to include how to support such forces while on campaign. This would become the foundation of blitzkrieg or “lightning war.” A part of that was having more modern tanks and so Guderian envisioned two types of medium tanks. One would combat enemy tanks while the other would support the infantry. In 1935, a specification was issued to manufacturers Daimler-Benz, Krupp, MAN, and Rheinmetall-Borsig to tender designs to meet the specification for a medium tank to combat enemy armor. The Daimler-Benz contender was selected and in 1936, the PzKpfw Ausf A appeared. Subsequent models, the Ausf B and Ausf C, would be produced with new modifications to the design in 1937. But these models were only built in small numbers, with a total just under 40 tanks between all the makes. The Ausf D, introduced in 1938, would be the start of the model that would reach quantity production. On September 27, 1939, the PzKpfw III was officially accepted into service following a long period of troop trials. The tank would be baptized in battle with the commencement of the Polenfeldzug (Polish Campaign) which began on September 1, 1939. Only with the start of Operation Barbarossa, the invasion of Russia, on June 22, 1941 was the PzKpfw III the most numerous tank within German front-line tank forces. At the time, model depending, the PzKpfw III was armed either with a 3.7cm KwK 36 cannon or the short barrel 5cm KwK 38 gun. While these were effective against the majority of Soviet armor which consisted of T-26 tanks, as the combat wore on, the Germans encountered the T-34/76 medium tank and the KV-1 heavy tank more and more and both the armor and the armament of the PzKpfw III was coming up short. It was only through superior training, tactical deployment, and better crew ergonomics within the tank (that enhanced efficiency) which saw the PzKpfw III achieve a kill ratio of 6 enemy tanks destroyed of all types for every 1 German tank lost during the initial battles in 1941. Still, steps were taken to improve the protection and firepower of the PzKpfw III with the introduction of the Ausf J model which featured the long barreled 5cm KwK 39 gun. Earlier models were often retrofitted with the new gun as the tank designers had the forethought to build a turret from the outset that could accommodate larger armament. The next model, introduced towards the close of 1941, was the Ausf L and this had the same gun as the Ausf J but the front hull and turret armor was increased to 70mm. In addition, to further increase protection, the Ausf L featured 20mm of spaced armor on the mantlet and the superstructure front.

     The photograph depicts a PzKpfw III Ausf L belonging to one of the companies of SS-Panzer Regiment 5, 5. SS-Panzerdivision “Wiking“ (“Viking”). The photograph was likely taken sometime in late 1942 or early 1943. This unit identification is observed by the divisional Sonnenrad (“Sun Cross”) emblem, seen on the tank's fender. This emblem was a representation of the Nordic Sonnenrad but it was “broken” by having four gaps rather than being closed. This makes it more of a Hakenkreuz, or swastika. The tank is an early model of the Ausf L and this can be told by the fact the turret sides still have the pistol ports, one of which can be seen next to the open side hatch. Later models would remove them. It would appear that the tank is behind the lines as the machinegun has a cover on it to protect it from dust and grit and the crew appears to be in just their service shirts rather than their panzerjacke (panzer jacket).

Jagdtiger "234": Scuttled in Zeiskam

GIs pose with the remains of "234" (Author's Collection)

      Leutnant Kasper Geoggler commanded three Jagdtigers from 3rd. Kompanie, Schwere Panzerjäger Abteilung 653 (3/s.Pz.Jg.Abt.653). Geoggler’s mount was “331” while “323” and “234” made up the remainder of the unit. The kampfgruppe was situated outside Neustadt and on March 22, 1945, the unit engaged an armored column from the U.S. 3rd. Army. As was a common tactic, the Jagdtigers shot up the lead and rear tanks, sandwiching the remainder of the tanks between the wrecks. In the chaos, the Jagdtigers picked off the U.S. tanks with relative ease. In all, Geoggler’s three Jagdtigers claimed a total of 25 tanks destroyed, including M4 Shermans and M10 Wolverine tank destroyers. “331” and “323” suffered a total of 10 hits from U.S. tank rounds but not a one penetrated the thick armor of the Jagdtigers. 

     Geoggler withdrew the kampfgruppe into Neustadt proper. There, “323” broke down while attempting to get into a firing position within a garden. “331” was situated along Landauer Strasse, across from the immobilized “323,” which gave it a dominating field of fire along the road. In time, “331” was down to its last round and so Geoggler ordered the recoil cylinders drained and had the final round fired. This jammed the gun in full recoil, rendering it useless to the Americans. The crews boarded their SdKfz 251 half-tracks and along with Jagdtiger “234”, abandoned Neustadt and made for Zeiskam. 

     There, “234” went into action at a railway crossing until a shot penetrated the right front fender and broke the track. With no chance to repair the track or recover “234”, it was abandoned and blown up by its crew. The photograph shows “234” following the U.S. Army entry into Zeiskam. The internal fire caused the suspension to drop which is why the Jagdtiger appears to be “sitting” so low. Curious GIs, such as these men, spent many a moment clambering up onto “234” and taking photographs with it.

The Type 4 20cm Roketto: Japan's Rocket Mainstay

(U.S. Army Signal Corps)

     The Germans, U.S., British, and especially the Russians made use of unguided rockets to augment standard artillery and provide for rapidly delivered, devastating bombardments against opposing forces. The Japanese, on the other hand, did not and by the time they realized the value of rockets, the effort put forward to deploy rocket systems was too little, too late. One such rocket system which did make it into service was the Type 4 20cm rocket launcher. 

     First issued in 1943, the Type 4 was actually a 203mm rocket, weighed just over 185lbs. and had a maximum range of 1.4 miles. The Japanese elected to not use fins as a means to stabilize the rocket and instead, it achieved accuracy by means of spin-stabilization. The Type 4 was fired from a standardized launcher which resembled that of a mortar (hence, the Type 4 weapon system often being referred to as a rocket mortar) but it had the advantage of being able to launch from something as simple as a dirt mound. Thus, it was not uncommon for Japanese troops to fabricate launchers in the field. This particular Type 4 was captured by the 4th. U.S. Marine Division during the Battle of Iwo Jima. Unlike the more usual wooden launch rails (which were easier to construct), this Type 4 launcher was far more elaborate. The wheeled carriage made transportation easier as well as allowed for more rapid deployment and had a locking lever to adjust the elevation of the launch tube. The rocket would be loaded into the tube and launched by pulling the long lanyard. The length of the lanyard allowed the firer to be far enough away from the rocket to avoid being struck by debris kicked up by the rocket exhaust. 

     Of all the rocket systems developed, the Type 4 was produced in significant numbers though most of them were kept within Japan to be used to repel the expected Allied invasion of the Japanese home islands…something which never happened.