Effectively, you use a horizontal antenna whip to broadcast a low power HF straight up, bounce the HF signal off the ionosphere, and you get radio communications in thick foliage or behind hills for 200 miles with no skip zone.
@ReassessHistory The US Army Campaign in New Guinea made extensive use of NVIS in the jungle and it was released as this:
War Department Technical Bulletin TB SIG 4 (Jan. 44) "Methods for Improving the Effectiveness of Jungle Radio Communication".
@ReassessHistory The NVIS information in TB SIG 4 was used on Normandy invasion command ship USS Ancon was equipped with NVIS to talk with the RAF 11th Wing in England and Patton's 3rd Army used NVIS equipped radio half track's in the dash across France.
@ReassessHistory All the 38 set needed for survivable and reliable operation was to lay the vertical whip antenna over the shoulder of the user to be a horizontal whip.
@NavalHistWar@AC_NavalHistory The story of the Brodie device is relatively easy to find. The April 1946 issue of the Field Artillery Journal had a three page article on the development history.
The USS LST-776 carried the device to Iwo Jima & Okinawa.
The Marines didn't think much of it. The 77th ID loved
@NavalHistWar@AC_NavalHistory ...the Brodie device as L4 Cubs launched from it spotted several hundred explosive suicide boats at Kerama Retto before they landed.
@MilAvHistory & @CBI_PTO_History have a great video on the February 1942 IJN attack on USN carrier Task Force 11. (link & title in @MilAvHistory tweet) watch the whole thing.
This thread is going to expand on the "Scope dope" of that engagement. /1
@NickHewitt4 The LVT's would have made a huge difference at Omaha beach for the same reasons they were the margin between victory and defeat at Tarawa.
They let a large body of formed infantry with an intact chain of command and intact radio net get right on top of an enemy position.
@NickHewitt4 More importantly, they would have used the Maj. Gen. Charles H. Corlett's Kwajalein LVT radio net procedures.
US Army’s 708th Provisional Amphibian Tractor Battalion at Kwajalein put VHF band, quartz crystal controlled FM radios in every LVT.
@NickHewitt4 The 708th was a converted US Army independent tank battalion built to support US Army infantry divisions. Everything it did at Kwajalein was standard operating procedure for US Army independent tank units, which had had “Shoot, Move and Communicate” in its...
@CBI_PTO_History@maltby1941 Kenney is one of those really polarizing personalities because he was literally the most innovative USAAF flag rank leader in WW2. This made him an existential threat to both the US Navy and the bomber barons as a post WW2 USAF Chief of Staff.
Kenney also cheesed off MID G-2
@CBI_PTO_History@maltby1941 You literally cannot trust anything people say about the man without checking primary sources not only for the SWPA, but for what the USAAF Bomber Barons were saying at the same time.
Overclaims, are and sea, are the usual stick to beat up Kenney.
@CBI_PTO_History@maltby1941 1. Compare Kenney's air to air claims in 1943 to 8th & 15th AF bomber air to air claims.
Kenney's claims were in the usual six to one
The Bomber Generals in the ETO/MTO were anywhere from 15 to 100 to one wrong in their air to air claims & knew they were lying because of Ultra.
This thread is on Section 22's role in the Nov 3 1943 raid by Saratoga & Princeton on the IJN cruiser force assembled at Rabaul to stop the Bougainville invasion & radar threads leading else where.