I would challenge that assessment of WW1, the Western Front was a place a stalemate by 1917, Russia leaving the war was a boost for Germany, but there was one aspect, unseen by the Allies, that was slowly by surely seriously damaging Germany.
The Royal Navy blockade, since 1914, as years went on, was starting to have serious effects on the German home-front, stirrings in the populace at the increasing privations and the stalemate on the front line.
(This is why Germany started the Battle Of Jutland, at heart, it was an attempt to break the RN
's ability to maintain this blockade, while Germany had the fewer losses in the only great WW1 naval battle, they did not succeed in lessening the blockade so was a strategic loss).
The attempt to do the same to the UK by the U-Boats is more well known, but the RN
blockade was the one which had the real effect.
Of course, sinking the Lusitania by a U-Boat, was a big factor in the US joining WW1.
The problem for Germany, with US WW1 entry, was about the potential, in size, of manpower, industry, certainly the US Army was, understandably, totally unprepared for WW1. In fact, there was a reversal to WW2, where a lot of it's equipment as the army ramped up for war, was French and British supplied.
But the USMC
acquitted themselves well in their first action, but the real killer for Germany, was the failure of their great 1918 offensive to break the stalemate once and for all, before very large numbers of equipped US troops arrived, from a nation with none of the acute war weariness and huge losses of Britain and France.
That failure, a last throw of the dice, was with the worsening situation on their home front, the last straw.
Back on topic, thanks to the RAF Battle Of Britain Flight, those of us born after WW2, have heard the wonderful sound of the Merlin, with the flying Spitfires, Hurricanes, the Lancaster.
Back in 1988, familiarity with this sound allowed me an unexpected discovery.
I was on a 'road trip' up and down Florida, staying overnight in Kissimmee, I went out for an early morning walk, on a very warm and clear November morning.
Along the way, I thought I heard a familiar sound, a Merlin engine?
Crossing the road, going into an area of un-built on land, I first found myself amongst a bunch of B-25 Mitchells, most in various stages of disrepair, cannibalisation, I recently seen the film 'Catch 22' on TV
, they were
Some still in now faded WW2 olive green, (one still with a tally of 'bombs' denoting missions still painted on), others seemed to be post war civil executive conversions.
Having never taken LSD, this was not some kind of 'flashback'.
So I went (ran) back to our motel, told my friends, grabbed my camera and some extra film.
After exploring the B-25 graveyard, we carried on towards the apparent sound of the Merlin engine, cutting through the otherwise quiet morning.
Then we found ourselves at a small airfield, a hangar, packed with a load of WW2 aircraft, in various stages of restoration.
Fighters, training, bombers, a beautifully restored Spitfire, then the source of the sound, a fully, fabulously restored P-51, the natural metal glinting in the sun, on chocks and running it's Merlin!
We found out that they were preparing to open up a new aviation museum.
Also on this trip, we managed to get into (with permission), the USCG facility at Opa Lockar (SP?), looking over Dauphins and Falcons, but the accidental find of the museum was something else, without having seen and heard Merlins at airshows, over London on great occasions, for several years before, I'd have never found it.