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Topic: The Porch, y'all. pull up a seat and kick back.

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Cincydawg

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Re: The Porch, y'all. pull up a seat and kick back.
« Reply #5446 on: March 25, 2024, 07:06:56 PM »
One of the many tragedies of war:

Exercise Tiger: Disaster at Slapton Sands (navy.mil)

The Germans did have some light naval units, and subs, in the general area.   Any of the large units were up in Norway.  The Luftwaffe had been largely pulled back to protect Germany.

Rommel suspected Normandy would be the landing target.

longhorn320

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Re: The Porch, y'all. pull up a seat and kick back.
« Reply #5447 on: March 25, 2024, 08:45:00 PM »
One of the many tragedies of war:

Exercise Tiger: Disaster at Slapton Sands (navy.mil)

The Germans did have some light naval units, and subs, in the general area.  Any of the large units were up in Norway.  The Luftwaffe had been largely pulled back to protect Germany.

Rommel suspected Normandy would be the landing target.
one of the few 
They won't let me give blood anymore. The burnt orange color scares the hell out of the doctors.

Cincydawg

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Re: The Porch, y'all. pull up a seat and kick back.
« Reply #5448 on: March 26, 2024, 05:17:56 AM »
When the 1st Marine Division arrived in the SE Pacific in 1942 in preparation for the Guadalcanal invasion, they found their gear and supplies were not combat loaded.  This meant the most vital stuff was in the back of the supply ship, so they had to unload and reload, and the NZ dock workers were on strike.

Then they also had a practice invasion, I forget where, some island, that was a disaster, not like the one above, but everything went wrong.  Some predicted the actual invasion would be a disaster.  When that day came in August 1942, they found almost no resistance on the beachhead around Henderson Field (named a bit later).  There were mostly only worker bees there who fled into the hills.  So, they managed "OK", with a lot of confusion that didn't much matter at first.

Then the Japanese launched air attacks on the fleet out of Rabaul, and then night naval raids, which tore up the naval forces present, and they pulled out, taking with them a lot of gear including all the heavier artillery and one Marine regiment.  The Japanese thought this was just a raid at first, and sent about 2,000 troops to kick out the Marines, that went poorly for them.

I read somewhere after about three months of combat in the 'canal, 87% of the Marines had malaria, and most were ruled combat unready, when the Army replaced them.

Amphibious assaults are very often disasters, I'll be visiting the ANZAC invasion beaches of Turkey (Gallipoli) in September.  

Landing at Anzac Cove - Wikipedia

The US Army of course pulled off several in Europe with essentially no Marine presence (maybe a handul of observers) that all went fairly well in comparison.  This of course was meant to be a Marine specialty.

Don't  get me started on Pelelilu.

longhorn320

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Re: The Porch, y'all. pull up a seat and kick back.
« Reply #5449 on: March 26, 2024, 10:16:49 AM »


Don't  get me started on Pelelilu.
Pelelilu is where my dad was stationed during the war

He was an electricians mate in the navy

He took part in making the airfield combat ready and various other places that needed electricity

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CWSooner

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Re: The Porch, y'all. pull up a seat and kick back.
« Reply #5450 on: March 26, 2024, 06:56:50 PM »
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CWSooner

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Re: The Porch, y'all. pull up a seat and kick back.
« Reply #5451 on: March 26, 2024, 07:53:30 PM »
All this takes me back to my grad school days when I and this other fellow would stay up all night playing board games about D Day or Battle of the Bulge.  I think the utility of those, and computer games of similar ilk, is to teach one about geography.  But then when I visited a place like Gettysburg, it's a lot different than I had expected, mostly distances seemed further, or closer, and I wondered about how the woods may have changed.

My buddy knew his military history pretty well, I didn't then.  He could easily cite, as you can, each division number at D Day and where they landed.  I've since read up on things of course, but while that is helpful I think, it's not sufficient.

I have subjected my wife to an overage of military "stuff" on our trips, she's pretty OK with it, though she does mention it at times and laughs.  We had one trip around France on back that I didn't realize how much I had done this until I wrote up a trip report.  She did say she enjoyed seeing the Maginot Line, as did I.  That one gets criticized a lot, but it did what was intended of course.

Chamberlain gets a lot of critique too of course, but it's not clear to me what else he could have done at Munich then.  The French were not going to war over the Czechs.

I've learned a lot of things in "history" that get labeled "horribly awful decisions" are actually more "constrained decisions influenced by prior history" and lack of accurate information.
There may never be firm consensus on what Britain and France woulda/coulda/shoulda done at Munich (Sep 38). They both feared a repeat of the bloodletting of 1914-1918.

But the German generals feared the same thing, and they did not believe that Germany was ready for war. And at least to some extent they were right.

The Luftwaffe was not ready for modern war. The Bf 109E (the first variant with a fuel-injected engine) was only beginning to come into service. There were still plenty of biplane fighters in service. German bombers were mostly there to provide tactical air support. No strategic bomber. Walther Wever had died 2 years earlier, and with him died advocacy for strategic bombers. Much the same as with the RAF. Hurricanes coming into service, Spitfires not quite yet, and plenty of biplanes on hand. The Wellington was the biggest bomber on hand, and that would continue for at least another couple of years.

The German army was not ready. The PzKpfw I, designed as a training tank, was the most common tank in the inventory. (It would see service in Russian and North Africa, long past its expiration date.) The PzKpfw II was coming into service, but its 20mm main gun wasn't going to be effective against enemy armor.

The Kriegsmarine wasn't ready for war either. In capital ships, Scharnhorst was not yet complete and Gneisenau was still working up. The "pocket battleships" (Graf Spee, et. al.)were the products of muddled thinking. More heavily armed than they needed to be for commerce raiding, but heavily enough to go up against enemy battleships. And they didn't have the range for commerce-raiding, so they were dependent on resupply ships. There weren't enough destroyers and cruisers to really form a battle fleet, even once Scharnhorst was completed and the Bismarcks were built. They had about 70 U-boats on hand, but that wasn't enough to wage a war for control of the Atlantic Ocean.

I think what Britain and France lacked more than weaponry was national will. Their leaders at Munich reflected public opinion, despite being obligated by treaty to aid Czechoslovakia. Chamberlain waved his scrap of paper and proclaimed "Peace in our time!." French PM Daladier, when he saw the throngs in Paris cheering him, said to his aide quietly, "Ah! The fools! If only they knew . . . ."

Churchill had this to say the next day--1 Oct 38--in the House of Commons, directing his remarks at Chamberlain:

Quote
“We have suffered a total and unmitigated defeat . . . .  You will find that in a period of time which may be measured by years, but may be measured by months, Czechoslovakia will be engulfed in the Nazi regime.  We are in the presence of a disaster of the first magnitude . . . .  We have sustained a defeat without a war, the consequences of which will travel far with us along our road . . . .  We have passed an awful milestone in our history, when the whole equilibrium of Europe has been deranged, and that the terrible words have for the first time been pronounced against the Western democracies: ‘Thou art weighed in the balance and found wanting.’  And do not suppose that this is the end.  This is only the beginning of the reckoning.  This is only the first sip, the first foretaste of a bitter cup which will be proffered to us year by year unless by a supreme recovery of moral health and martial vigor, we arise again and take our stand for freedom as in the olden time.”

“You were given the choice between war and dishonor. You chose dishonor and you will have war.”
Churchill wasn't omniscient. He could be quite foolish at times. But he nailed it here, IMO.

I wonder how this compares with the ongoing debate about strategic bombing in WW 2, especially in Germany.  I've read various "studies" giving various results.  I know German war production peaked in December 1944, but they had to devote a lot of resources to trying to combat the bombing campaigns.

Lemay was frustrated with the results in Japan, or so I've read, which lead to the fire bombing efforts.  But I think the B29 was bombing from higher altitudes than B17s usually, and the jet stream was a new thing for them.  I guess had we redirected those resources to ground forces, maybe the result would have not been much if any better as we'd have logistics issues with more ground forces in Europe I suspect.

We had'em anyway.

Yep. The jet stream. Long missions in airplanes with many lethal mechanical problems. Short time on target, with little margin for overwater navigational errors. Japanese fighter opposition. Decentralized industry, leaving few concentrated targets. Night bombing with incendiaries, from B-29s that had been lightened by having most of their defensive armament removed, was the horribly effective way to go. We didn't put any of the Japanese leaders on trial for the bombing of Chinese cities, because we had spent the last months of the war firebombing Japanese cities.
Leaving the A-bomb out of the discussion, it's still debatable whether airpower was worth what it cost to create and project it. It wasn't decisive in itself, as all the airpower advocates of the '20s and '30s had claimed that it would be.
« Last Edit: March 27, 2024, 06:05:22 PM by CWSooner »
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CWSooner

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Re: The Porch, y'all. pull up a seat and kick back.
« Reply #5452 on: March 26, 2024, 08:06:44 PM »
I always wondered, where was the German Navy during D-Day?  I know Britain and US had much superior Navy's overall, but it seems really odd to me that the Germans let us land uncontested from the sea.  They didn't even have patrols out, nor any kind of battleships to counter or anything like that?  And where was their Air Force on D-Day?  Did they try to attack our amphibious vehicles from the air?
By June 1944, the Kriegsmarine was reduced to U-boat warfare. Bismarck was sunk. Tirpitz was wounded, and hiding in Norway. Scharnhorst had been sunk in the Battle of the North Cape in Dec 43. Gneisenau was badly damaged in an RAF bombing raid in Dec 42 and never went to sea again as a fighting ship. There were the capital ships of Germany's battle fleet. U-boats would have plenty of targets in English Channel on 6 Jun 44, but there were destroyers everywhere.
The Luftwaffe day-fighter force had been badly defeated in the air battles of late winter-early spring of '44 as the USAAF finally deployed drop tanks and the P-51 Mustang came on in force. And the weather was not great on that day. One Fw 190 made a pass over the invasion beaches, and that was it.
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Cincydawg

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Re: The Porch, y'all. pull up a seat and kick back.
« Reply #5453 on: March 27, 2024, 07:40:48 AM »
Without France, Chamberlain really had no options, I think.  And he clearly was without France.  How could the UK go to war with Germany over the Sudetenland without France?  Germany wasn't prepared in 1939, nor was anyone else, maybe France was in terms of manpower and equipment.  I think Chamberlain gets a bad rap, and same with the Maginot Line.  I think the core issues were elsewhere.

In some "ideal world", the French would have invested in 2-3 armored divisions with their medium tanks (which were better than the Panzer II by far).  But that wasn't remotely in their thinking.  And they would have mishandled them anyway giving the Germans more armored platforms for their divisions later.

I was amazed learning about the state of German tanks in 1940.  One had the impression they had this juggernaut of armored divisions when in fact they were mostly Panzer IIs and that Czech tank, a few IIIs here and there with the 37 mm main gun, and the IV had that short barreled 75.  This remained true in 1941 as well for the most part.

They did a credible job mounting some antitank guns on French chassis later of course.  

Cincydawg

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Re: The Porch, y'all. pull up a seat and kick back.
« Reply #5454 on: March 27, 2024, 08:33:45 AM »
XB-38 - Don't put all your Engines in One Basket - PlaneHistoria
XB-38 - Don't put all your Engines in One Basket - PlaneHistoria


CWSooner

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Re: The Porch, y'all. pull up a seat and kick back.
« Reply #5455 on: March 27, 2024, 04:07:23 PM »
Interesting comparison between the B-17 and the XB-38. More power (1425 hp) out of the Allison V-1710 than out of the Wright R-1830 (1200 hp), BUT all sorts of complications and vulnerabilities that made it less suitable for how the USAAF was employing its heavy bombers in 1943--unescorted daylight bombing against a formidable enemy fighter force and heavy antiaircraft defenses.

The Wikipedia article says that the XB-38 had a higher top speed than the regular B-17E, but had a lower ceiling, and  this War Department memorandum on the performance of the B-17E agrees with that. I'm not sure why that would be. My immediate thought was that that was because the R-1830 was turbo-supercharged and the V-1710 was not. But that is not correct--the XB-38's Allisons were turbo-supercharged, just as they were on the P-38 (but were not on the P-39 and P-40). Maybe it's because, per the War Department memorandum, the B-17E had a gross weight of 50,000 lbs., while the XB-38 had a gross weight of 56,000 lbs.

There's also an interesting comparison with RAF bomber development. Its medium bombers tended to have radial engines as originally designed, but with inline engines as a backup. The Wellington was designed and and the Mark I version was built with Bristol Pegasus radials displacing 1753 cubic inches. But the Mark II had the Rolls-Royce Merlin V-12 of 1650 c.i.d. Then the Mark III had a bigger Bristol Hercules of 2360 c.i.d. The Mark IV had a Pratt & Whitney R-1830, just like the B-17. The Mark VI went back to the Merlin, but one with a supercharger arrangement better for higher altitudes. The Mark X, the most widely produced version, went back to the Bristol Hercules, but one that produced more hp.

The first RAF heavy, the Stirling, had radials in every version. But the Lancaster and Halifax were initially built with R-R Merlins. The Lancaster Mark II had Bristol Hercules radials. The Mark III went back to Merlins, but of the Packard-built variety. All subsequent versions had either R-R or Packard Merlins. The Halifax followed a different pattern. It used R-R Merlins in the Mark I and Mark II versions, but the definitive Mark III had the Bristol Hercules.

It seems that in all cases, the changing of engine types (from inline to radial, and back) was done more for guaranteed engine availability than for improved performance.

Back to the B-17, the YB-40 escort bomber is an interesting story. I know a guy who once worked for a guy who flew YB-40s in combat.
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Cincydawg

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Re: The Porch, y'all. pull up a seat and kick back.
« Reply #5456 on: March 27, 2024, 04:10:55 PM »
The boost on the Allisons may have been lower at altitude.  

CWSooner

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Re: The Porch, y'all. pull up a seat and kick back.
« Reply #5457 on: March 27, 2024, 04:11:16 PM »
Without France, Chamberlain really had no options, I think.  And he clearly was without France.  How could the UK go to war with Germany over the Sudetenland without France?  Germany wasn't prepared in 1939, nor was anyone else, maybe France was in terms of manpower and equipment.  I think Chamberlain gets a bad rap, and same with the Maginot Line.  I think the core issues were elsewhere.

In some "ideal world", the French would have invested in 2-3 armored divisions with their medium tanks (which were better than the Panzer II by far).  But that wasn't remotely in their thinking.  And they would have mishandled them anyway giving the Germans more armored platforms for their divisions later.

I was amazed learning about the state of German tanks in 1940.  One had the impression they had this juggernaut of armored divisions when in fact they were mostly Panzer IIs and that Czech tank, a few IIIs here and there with the 37 mm main gun, and the IV had that short barreled 75.  This remained true in 1941 as well for the most part.

They did a credible job mounting some antitank guns on French chassis later of course.
YouTube, monitoring my message board conversations, conveniently brought this to my attention yesterday evening.


https://www.youtube.com/watch?v=hr_vSJVuZtg&pp=ygUtd2hhdCB3YXMgdGhlIGZyZW5jaCBhcm15IHNvIHdvcnRobGVzcyBpbiB3d0lJ
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CWSooner

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Re: The Porch, y'all. pull up a seat and kick back.
« Reply #5458 on: March 27, 2024, 04:16:52 PM »
The boost on the Allisons may have been lower at altitude.
Maybe so. That certainly would have been the case had the turbo-superchargers not been installed. The Allison V-1710 never got truly good mechanical supercharging until after the war, thanks to the USAAF not being much interested in the subject. (In contrast, none of the R-R Merlin installations used turbo-supercharging.)
But with Lockheed doing the conversion of the B-17E to the XB-40, you'd think they would have likely used boost settings similar to what they were already using on their own P-38s.
I'm sticking with 6,000 extra pounds of weight being the culprit.
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Cincydawg

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Re: The Porch, y'all. pull up a seat and kick back.
« Reply #5459 on: March 27, 2024, 04:21:44 PM »
That's a nice video./

 

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