Showing posts with label M2A4. Show all posts
Showing posts with label M2A4. Show all posts

Friday, August 15, 2014

First Battle for American Tanks Crewed By American Tankers

With tensions rising in the Pacific, two Federalized National Guard units were equipped with M3 tanks (called Stuart by the Brits, but M3 by Americans. These units, the 192nd and 194th Tank Battalions were shipped to Manila, and assigned to field forces under General Jonathan Wainwright.  When the Japanese landed at Lingayan Gulf, the 192nd was sent -  on 21 December - North to intercept them.


The M3s were notorious gas hogs and had little or no organic mobile fuel support.  They headed to Gerona, which was supposed to have the high-octane petroleum those tanks converted radial aircraft engines burned, but those reports were wrong.  Company B, under Captain Don Hanes, was forced to consolidate remaining fuel and field just a single five-tank platoon of fully-fueled tanks to meet the Japanese advance.  With reports of enemy motorized forces fast-approaching Damortis, General Wainwright ordered Hanes to send his five operational tanks, under Lieutenant Ben Morin, to stop them.

At Damortis, these five M3 tanks encountered advanced elements of the Imperial Japanese Army's 4th Tank regiment, equipped with Type 95 Light Tanks.  These, though diesel-powered and slower than the M3s, were otherwise largely comparable. Both were equipped with dual-purpose (AP and explosive-firing) 37mm cannon - the American's gun had a higher muzzle velocity, but at combat ranges, the Japanese 37mm could breach American armor plate, especially to the side and rear.



This became the first time American-built tanks, manned by American Army crews, entered combat against the enemy - it was also the first tank vs. tank clash between Americans and the Japanese (or American tanks and any enemy tanks) - certainly the first time it happened in WW-II (some American armor might have engaged German armor in the waning days of WW-I, but I've yet to be able to confirm or deny this).  Later, as noted in another blog in this blog-site, the M3 and the M2A4 were the first US-built armor crewed by Americans to be taken on the offense (the PI's use of armor was clearly defensive).  And of course, the Royal Tank Regiment in North Africa used the Stuart (aka "Honey") earlier in 1941 against Rommel's Afrika Korps, being the first combat use of American-built tanks in WW-II.

Back to this combat ... the Type 95 had been state of the art for light tanks in the mid-30s (though the French arguably had the best all-round light tanks in the mid-30s - but with no armored doctrine, these still-formidable tanks were all but useless in May, 1940).  However, by 1941, it was not as advanced in some areas as the M3.  The M3 had more horsepower, better automotive qualities, a higher speed and a more potent 37mm gun (and a bit better armor).  However, as noted, at combat ranges, the Type 95's short-barrel/low-velocity 37mm was sufficiently potent to hurt the M3s.

The American tanks were not well-handled - this was a National Guard unit that had been recently federalized and which had little time to familiarize themselves with their M3s. At the same time, the Army doctrine was for "tank destroyers" to fight tanks, while tanks were to be reserved for breakthroughs and exploitation behind the lines (or for infantry support, which explained the early M3's plethora of .30-caliber Browning machine guns - five on these tanks).  To this end, the Army had shipped 75 very early models of M3 GMC  half-track tank destroyers (known as T-12 GMCs) to the PI to provide anti-tank protection. These halftracks mounted American-built French 75s from the Great War (versions of these guns were later used in the M3 and M4 medium tanks, and the M8 Howitzer motor carriage based on the M3).  These gave great service in the PI, but were not in this battle.



When the confrontation broke out, the lead American tank left the road to maneuver, but as it did it was hit - probably on the more vulnerable flank - and caught fire, a total loss, and the crew, including the wounded Lt. Morin, was captured.  The other four M3s were also hit, but none of those were disabled and they were able to pull back from field of combat, though they were later destroyed by a tactical Japanese airstrike. 

While in combat with the Type 95s, they did manage to hold up the Japanese drive for a while, though, and this set the pattern for later US tank use in the PI.  Americans would lie in ambush at strategic choke-points, such as bridges, surprise the enemy and cause casualties while holding up and delaying the Japanese, allowing more Americans and Filipinos to evacuate into Bataan.

This fight took place in the plains that stretched from Lingayan Gulf toward Manila, with tropical grass and clumps of tropical trees and shrubs. Fighting was at close quarters, and a scene in which Lt. Morin's crew was captured by a Type 95 crew is certainly eminently modelable.  The clash did little to stem the Japanese flood-tide, but it was an historical clash from several perspectives.  Because both vehicles are available in several popular scales, this is indeed history you can model.

Sunday, July 20, 2014

M2A4 - Grand-sire of half-a-dozen operational US tanks and AFVs

The M2A4 was the ultimate derivation of the M2 series of US Army pre-war light tanks, the equivalent of the cavalry's M1 Combat Car (also a light tank in all but name).m2a4-light-tank-01.png
 A 3/4 view of the M2a4 - note hull sponson .30-caliber MGs and bow-mounted step. THe two horizontal bars on the glacis were to deflect bullets from bouncing off the hull into the driver's compartment.

It pioneered a number of features found on later US tanks, including:

a. A rotating turret armed with a tank-killing 37mm gun (which also had anti-personnel capabilities) and a co-ax .30 mg

b. An air-cooled, gasoline-powered radial engine adapted from an aviation engine for high power and light weight

c. A vertical volute suspension system

d. A hull-mounted flexible .30 caliber mg operated by the co-driver

e. A pintle-mount .30 mg for the tank commander

This AFV was, at the time it was constructed, both swift and mechanically-reliable, and armed with a potent 37mm gun the equivalent of (and based on) the German PAK 35/36 gun, also in 37mm caliber - so it could have held its own in combat in 1940.

phot5056a.jpg
 A pre-production M2A4 on display at USA Aberdeen Proving Grounds in Maryland in 1939

However, the real importance of this vehicle was that it was used as the direct basis of the following tanks:

1. M2 Medium - it was the M2A4 on steroids, with the same basic layout, the same suspension (just more of it, as it was longer), a larger radial engine, the same 37mm gun and the same .30 caliber MGs (but a lot more of them); and,

http://upload.wikimedia.org/wikipedia/commons/b/b5/Aberdean_proving_grounds_014.JPG

https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEghDKxqZQ1NCiRVEPBlKvGCTxONtJb5udNvCgFGQjc7bqg0eBvXim6zbzgRIvMWQKEFLe7HDxuQt9E8Dtccwfo1lWtDgBni-A30gX7mx3fYRNON64N8X_TGl9rbo6yNna9ROug5ga2RQ3k/s1600/Tank+Usa+m2a1-medium-tank-02.png

2. M3 Light Tank (dubbed "Stuart" by the Brits), which was basically the same vehicle, with a bit more potent engine, thicker armor, a different gun mount for the 37mm cannon, and a trailing idler to provide greater ground contact and floatation for the tracks, to absorb the added weight of greater armor.

 http://www.strijdbewijs.nl/tanks/stuart/ST03.jpg





The M2A4 was indirectly responsible for (through the M2 Medium) the M3 (British name Grant/Lee) and the M4 (Brit-name Sherman), both of which had the same mechanical layout as the M2 Medium - suspension, drive train, engine, etc.

http://tankstogo.com/United_States/images/USgrant-1.jpg




http://cwcrossroads.files.wordpress.com/2012/02/lee-m3.jpg

The M2A4 was also indirectly responsible for the M5 light tank (also Brit-named Stuart), the M8 GMC with a 75mm howitzer, a whole range of high-speed tractors, the Brits' turretless M3/M5 "Kangaroo" APCs used in NW Europe, and (via turrets) several of the gun- and howitzer-turreted LTV Amtrak amphibious landing craft.



 http://www.wwiivehicles.com/usa/self-propelled-guns/m8-howitzer-motor-carriage/m8-howitzer-motor-carriage-02.png



 

 http://www.armouruk.net/images/P1010157.jpg



 

However, the greatest direct influence of the M2A4 was the M3 series of light tanks which were direct extenders of the M2A4 design, with just a few changes to the gun mount, the idler wheel and internal features.  The M3 quickly evolved, losing the fixed-hull machine guns and adding lots of stowage (most externally), but it always remained an upgraded M2A4.

M2A4_07.JPG
An operational M2A4 with what looks like a cloth temporary tactical recognition band. Also note how the turret hatch would naturally reflect bullet strikes into the vehicle commander's face - ouch!



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Bow-on view of M2A4 in operational service
There were only 375 M2A4s built - Britain ordered a batch, but only 36 were made before the contract was shifted to the more potent and capable M3 light tanks. Not clear if this was 375 + 36, or 375 including 36. Rumor has it that the Brits shipped the M2A4 to Egypt, but then shipped them on to India where they (were rumored to) saw combat against the Japanese Army 4th Armored brigade.    m2a4-light-tank-011.png



 Profile view of production M2A4

M2-tank-england.gif  
The Brits received 36 M2A4 tanks - here's one (named Al Capone) being examined by Royal Armored Corps technicians

However, it is substantiated and documented that the USMC took some M2A4 light tanks into combat on Tulagi and Guadalcanal, beginning with the invasion of those two islands on August 7, 1942. They did see combat, in units which also contained M3s. It's not clear if they saw head-to-head combat with Japanese light and medium tanks (some Marine tanks did fight them in the battle of Matanikau River on Oct. 23rd, 1942, but I can't confirm that the M2A4s were in this fight.



M2A4 guadalcanal.jpg
Side view of Marine M2A4 during Guadalcanal campaign

http://www.myhobbyinfo.com/forum/download/file.php?id=35&mode=view USMC M2A4 leading a pair of USMC M3 light tanks at Guadalcanal, summer/fall, 1942 - the only time US forces took the M2A4 into combat (some may have been based at islands that were attacked by air strikes, but that's not the same thing as taking them into battle).

There is a resin kit/conversion of the M2A4 - I've got one ordered from Poland, but have no idea when or if it will arrive - but if you want to model an obscure but seminal early-war tank, the M2A4 should be in your list.