About the Hotchkiss machine gun.
The French of course are the source of the Hotchkiss machine gun. (a fine machine for its time, which presages so many features rightly, which many modern machine guns wrongly use [cough, M-60, cough] such as the indexer, the gas piston operated lever pawl and spent case extractor unified in one single cam action, a left side feed ramp and a completely screw-less and pin-less parts assembly that is idiot proof. It cannot be assembled incorrectly. It simply is impossible for Private Fumbles to put it together wrong and have it blow apart or tear his face off. (Like the Ross rifle and the Chauchat did.)
It was a reliable if cranky piece of ordnance in use. The users had to be smarter than it was or it would bite them with cook offs and runaway gun. With its low steady 450 rpm, that seems surprising, but the same Private Fumbles would try to ramp up the rate at the factory presets on the adjustable gas port.
The gun could run at 700+ rpm if you were stupid, and jammed the feeder strips in too fast or ran the articulated belt through it with the port wide open.
A feature often overlooked is that the gun was designed to have a field change out of the barrel, if it warped or got too hot. This required a special wrench and gloves (barrel is HOT when dull red, [about 230 degrees Celsius.). It was not a quick change barrel in the modern sense, but it could be changed out in a minute or so, provided Private Fumbles had not lost the wrench.
In the version, modeled for the AU, Private Fumbles flips a locking lever up [top of gun just ahead of the rear ladder sight], turns the lock cam knob to OUT and pulls out the barrel and gas tube unit as a complete unit. The new barrel and gas tube unit fits into the figure eight shaped receiver and is shoved in until Fumbles hears the click and then he turns the lock cam knob to IN and latches the locking lever down.
Here's the thing, though. Private Fumbles did not get that name by being a genius. RTL example. The US Army was chasing a Mexican bandito [and patriot] named Pancho Villa after he crossed into New Mexico and shot up a border town. Wilson sent Pershing and about two brigades worth of Regulars with orders to wipe Villa out.
The American expedition took along a few new toys, including the aero-plane, touring cars for its cavalry [Patton] and the Brand New Benet Mercie automatic rifle. (
the Hotchkiss Portative)
This was Mister Benet's much lighter inverted operated cycle simplification of the Hotchkiss Mlle 1900 and it worked dandy fine for Great Britain, Belgium, Sweden... and Mexico.
But it is the US Army... Fed a diet of left hand feed Colt Potato Diggers, the average infantry private, even though he was taught to feed the Benet Mercie from the right with the strip plate up and cartridge fingers down and to make sure the feeder strip (marked this side up and with an arrow stamped on it to show which way the strip was supposed to run through the gun) was fed correctly, insisted on feeding the Portative from the left side and with the feeder strip upside down, because damnit, that was the way machine guns were supposed to work.
The Portative was withdrawn from service immediately after user complaints about the gun being "defective".
Hence, the US army had no light machine gun (or heavy machine gun) for WW I. They would get a very good recoil operated heavy one from John Browning (the inventor of the Potato Digger) after the war (still in use BTW because it is so good.) and an auto-rifle that would mutate into an excellent light machine gun, once someone French remembered what Benet originally did... turn the BAR's action upside down, borrow Browning's gas operated [Potato Digger] belt feed camming action and market it as a Belgian machine gun, after the Vietnam War. (Refer to the M-60 debacle.)
But what about WW I? What machine gun would the AEF use? The Potato Digger was being modified, but the Marlin would be unsuitable for the trenches as it could not stand the heat,
The Maxim was British. Politics.
That left Mr. Benet and the Hotchkiss Mlle 1914.
In this AU, why march on Moscow by way of the South Pole?
Keep Mr. Hotchkiss to fiddle around as a merchant of death, let him croak here, and his company remains after him in the US, exporting arms in competition with Whitworth, Armstrong, and Schneider, which impels his company agents, after he dies, to hunt down those Austrian patents as they did RTL. Let Benet work on the gun in the US (as he did RTL in France as a US Navy ordnance expert on loan to Hotchkiss et Cie) as a Navy officer at the naval gun factory and perfect it. Give it to the Marines.
See what happens...
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About the submarine cable ship.
Okay the British had a series of them called the
CS Monarchs 1, II, and III. Let's just say, that two of them had "unfortunate" run-ins with the US Navy. That is strange history for a later day, but being attacked by US destroyers {USS Plunkett (DD-431)} as one of them was in WW II, came as a shock to me.
Anyway...
Cable splicing and grapple stations included.
After all, Mister McKinley's Navy (RTL) DID dredge up British-laid submarine cables and TAPPED them to read the Admiralty cable traffic.