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Trent Telenko Profile picture
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4 Apr, 8 tweets, 4 min read
Since COVID-19 has kept the major archives closed or so limited in access they might as well be. This thread is an examination of an on-line source of primary sources here:

Ordnance, Explosives, and Related Items
bulletpicker.com
The bulletpicker.com collection went public in late May, 2016 and has a huge number of ordnance, small arms, and defusing related items.
The library section is the heart of the site and it covers WW2 UK, US, Australian, and technical intelligence by those powers on German, Italian and Japanese ordnance, engineering and small arms.
You can find the US Navy Bomb Disposal school section here: bulletpicker.com/us-navy-bomb-d…

It is very comprehensive in coverage of WW2 bomb disposal.
The Technical Intelligence Summaries are a WW2 Australian military product covering 1943 - 1945 era weapons, bombs & mines.
bulletpicker.com/technical-inte…
The War Department documents section covers WW1 era heavy ordnance.
bulletpicker.com/ordnance-docum…
The site is an easy peezy lemon squeezy primary source reference.

Check it out.
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More from @TrentTelenko

Trent Telenko Profile picture
3 Apr
This is another thread on Imperial Japanese radar countermeasures in WW2.

This thread will also include the US inter-service intelligence/classification/budget wars between the Joint Chiefs & MacArthur's Section 22 radar hunters.
1/ Image
The information in this thread is coming from a 28 May 1945 training document from Boca Raton Army Air Field.

William Cahill of the Sec 22 Special Interest Group found it in Late Feb 2021. 2/ ImageImage
What Cahill found in RCM Digest 14 was yet another bit of Japanese radar countermeasures.

One utterly unique in the history of electronic warfare. 3/
Read 14 tweets
Trent Telenko Profile picture
20 Mar
This tweet thread is the last of 5 that has reviewed & evaluated FEAF's ATIG Report No. 153 Japanese Radar Countermeasures & covers page 3 in the section named the "Actual Operational Use of RCM Equipment By The Japanese Army & Navy - Part B"

1/
Page 3 of that section covers the efforts of the IJAAF "Radar Expeditionary Section" in combat at Okinawa in the period from June thru Aug 1945.

Most radar countermeasures equipment was flown in Mitsubishi Ki-67 Hiryū (飛龍, "Flying Dragon"; Allied reporting name "Peggy")

2/
14. On 20 June 1945 a IJAAS RCM project called "the Radar Expeditionary Section" was sent to Kyushu to combat test a suite of RCM equipment including the TAKI 4, 5, 8, 8, 23, and 40. It was attached to the 60th Fighter Group (Reconnaissance) of the 6th Air Army based at...

3/
Read 20 tweets
Trent Telenko Profile picture
20 Mar
This thread is the next tranche, the 4th, of excerpts and evaluations from FEAF's ATIG No. 153 Japanese Radar Countermeasures, "Actual Operational Use of RCM Equipment By The Japanese Army & Navy - Part B"
page 2
1/
I'm going to put the links to the three previous threads at the end, as opposed to the beginning, of this thread as Twitter is only letting me get to 24 tweets before forcing me to post.

Cursed Admins!
2/
Starting at page 2 of "Actual Operational Use of RCM Equipment By The Japanese Army & Navy - Part B"

8. US investigators said the March 1945 Betty 22-Okha attack group trying to sink USS Franklin was the only
airborne combat use of the FT-B radar intercept receivers.

3/
Read 22 tweets
Trent Telenko Profile picture
18 Mar
Welcome to the 3rd thread examining the Far Eastern Air Forces report Air Technical Intelligence Group (ATIG) No. 153 Japanese Radar Countermeasures that covered Japanese electronic warfare in WW2. 1/

This was the 1st thread:
And this was the 2nd thread:
2/
The ATIG No. 153 section I'm pulling this summary from is "Actual Operational Use of RCM Equipment By The Japanese Army & Navy - Part B, page 1 of 3"

It is the operational nuts and bolts of how & how often the IJA & IJN used their radio/radar countermeasures kit.
3/
Read 28 tweets
Trent Telenko Profile picture
18 Mar
The subject of this twitter thread is US Military airfield engineering in the Pacific War and several documents I uncovered answering a RFI from the Australian War Memorial via a US Army officer I know. 1/
Australian War Memorial requested information on the US Army's 43rd Engineer Battalion and their participation in the Battle of Milne Bay, August through September 1942.

I was pinged by the US officer, who is in Oz right now, to help. 2/
The 43rd Engineer Btn is on wikipedia--

en.wikipedia.org/wiki/43rd_Engi…

According to the wiki the 43rd "was activated at Fort Snelling, Minnesota on 10 February 1941, before being redesignated on 16 March 1943 as the 43rd Engineer General Service Regiment. 3/
Read 25 tweets
Trent Telenko Profile picture
15 Mar
@GoodClearTweets @CalumDouglas1 @militaryhistori Another book to go with those three economic tomes is John Stubbington's “Kept in the Dark – The Denial to Bomber Command of Vital Ultra and Other Intelligence During World War II.”

This link is to a review—

speedreaders.info/293-bomber_com…
@GoodClearTweets @CalumDouglas1 @militaryhistori “Kept in the Dark” is -NOT- light reading. There is a lot of organizational ground to cover in documenting the growth of the UK’s wartime intelligence structure supporting the Combined Bomber Offensive. And explaining how it came about that the UK Air Ministry didn’t provide...
@GoodClearTweets @CalumDouglas1 @militaryhistori ...ULTRA intercepts to the U.K. based RAF Fighter, Coastal and especially Bomber Commands.

While at the same time it did so with British military over seas commands and first the American 8th Air Force and later the United States Strategic Air Force in England.
Read 10 tweets

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