In 1943 the Harlem Hellfighters 369th regiment was broken up and organized into the 369th Anti-Aircraft Artillery Gun Battalion and the 870th Anti-Aircraft Artillery Automatic Weapons Battalion.
The African American 870th AAA AW Btn was shipped to Okinawa, Lt. Col. W. F. Lucas commanding.
The 870th was to guard one of the airfields to be built in Southern Okinawa after the island was over run at the end of Apr 1945.
The IJA & May rains put an end to that plan. 3/
870th AAA AW Btn was armed with 16 each 40m autocannons and M-51 quad-Maxon mount .50 caliber machine guns in four batteries with four of each weapons. 4/
When the 870th Harlem Hellfighters arrived at Okinawa. Their 40mm and .50 caliber weapons were taken away from them. They were issued rifles, carbines, machine guns, bazookas and mortars and sent to Kerama Retto.
The group of islands was a major Naval base with a problem. 5/
The problem was that the islands in the group had not been properly cleared of Japanese resistance by the assault troops.
While more than 350 IJA suicide boats were captured or destroyed at Kerama Retto. When the 77th Division infantry battalion was withdrawn. The garrison 6/
...crewing them came out to contest American control of Kerama Retto.
On 11 May a landing party lead by USN Cmdr Drexler, the C.O. of LST Flotilla 47 went to Aka Shima and was ambushed by hold out Japanese soldiers.
Drexler's bayonetted body was recovered the next day. 7/
Midnight 11/12 May a Japanese infantry force assaulted Tokashiki town with rifles, Bangalore torpedo's and satchel charges
On the 16 May 1945 at Zamami Shima a USMC SCR-270 radar fuel was set on fire by infiltrators.
The ensuing fire badly burned 3 officers and 31 enlisted.
8/
With all of this going on, the 870th was converted to infantry to mop up the Japanese the 77th Infantry Division left behind.
This is a short description of their work from the late 1945 report Antiaircraft Activities of the Pacific War. 9/
This is the Tenth Army After Action report Anti-aircraft Staff Section describing the 870th's infantry work in Kerama Retto.
10/
And this is the description of the 870th's infantry work in the article "Activities of the Tenth Army AAA," Anti-Aircraft Journal July-Aug 1949. See the passage from Pages 9 - 10 below.
11/
This map of the US Navy seaplane sectors searched from Kerama Retto gives you an idea of how vital the work of "Harlem's Hellfighters" was in securing the island group was in WW2...and how little recognized.
I have been beating up on the Field Artillery crowd on X for literally years over the rapid firepower growth curve of drones compared to tube artillery.
Drones do cluster munitions far more accurately than tube artillery.
And the shortages of Ukrainian artillery shells through out the Russo-Ukrainian War has meant drone surveillance was the prerequisite for shooting any tube artillery at all, be it cluster munition or unitary.
Guns rule in the age of drones, but the "muffin top" Burke class DDG's are so top heavy with the SLQ-32(V)7 Surface Electronic Warfare Improvement Program (SEWIP) installation that the idea of adding 76mm or 57mm autocannons is insane from the metacentric height POV.
I've been posting about the inertia of Russian civil infrastructure industrial disinvestment for some time regarding Russian railways and it's foreign bearings.
The key tell going forward is triage.
This western part problem also applies to Russian Coal fired power plants 1/
...and we are seeing triage there now that will apply to Russian railways later.
Non-Russian core populations areas of Russia have been cut off from modernization and restoration of thermal power plants due to a lack of Western parts.
2/
There are grave implications in that for the electrified Trans-Siberian railway.
Russian railways are already seeing repair trains derail on the journey to go fix derailments.
...continue for years even if the fighting stops tomorrow.
The rundown of Russian stocks of western railway bearing will continue for years because the specialty steel supply chain feeding western bearing manufacturers has shut down unused capacity after 3-years of war.
2/
It will take years to "turn on" the specialty steel pipeline to even begin to make new bearings for the Russian railways.
Compounding the matter is the extreme age of the Russian rolling stock fleet of 1.1 million freight cars/wagons at the beginning of the war.