Alternate WW1: Japan
Alright all, I remember reading somewhere that Japan was considering sending troops to the Western Front in late 1916-early 1917. They ended up not doing this of course, but I was wondering what might have happened if they had. It would have made the post war situation quite different politically. Reactionary Japan would have been the king maker at Versailles rather than Wilson and his liberal internationalists. I imagine it may have deepened the UK-Japan friendship and possibly led to the US refocusing on the western hemisphere as liberal internationalism would have been even less relevant after the war. I don't imagine the Americans would abandon the Philippines but US influence in the region would have been curtailed. I'm not sure how things with China would shake out but if Japan was still friendly enough with the UK and France, objections to the annexation of Manchuria might have been more muted. In addition, Japan and Germany wouldn't have formed an alliance, and the Second World War might be more European focused like the First was, assuming it happened at all.
Also with significant land combat experience, the Imperial Japanese army might have ended up with more pull in Tokyo and their 'northern strategy' to take on the USSR rather than the IJN and it's 'southern strategy' to take on the US, France and UK may have become dominant.
Just some things I've been thinking about, I'd like to hear your thoughts.