Simple Simon

  Yes which will be a shock both to them and to the British empire, which has lost its most powerful member.  Especially since our Canada may well  not want to slot into the KoC's place, i.e. being a full member of the imperial parliament.

  However it will be even more chaotic to the south.  Two different America's long with a markedly more powerful Mexico and the New England Confederation and the Kingdom of Georgia.  [The latter includes the OTL US states of S Carolina, Georgia, Florida, Alabama, Mississippi and the Mississippi delta, as well as the British Caribbean colonie, which in this world include Cuba].  Furthermore since it is a full member of the imperial parliament and majority black its going to be a surprise to everybody from our world.

  That's going to be a problem for a lot of displaced people.  Especially prehaps those who have lost their families as a result.  I suspect the 1st Canadian div will stay as a unit working within the British army during the war but afterwards its people will have to decide what to do.  Some might go 'back' to Canada, with some of them fitting in while others find it a bit too alien - in part because elements are clearly Canadian and end up moving elsewhere.  Others could well end up in Britain, especially if they become attached to British girls during their service, or elsewhere in the empire.

  For the KoC it will be very willing to help but could be constrained by relations with the US.  Given their US is their traditional enemy/threat, albeit not that realistic for several generations, this US is a hell of a lot bigger and also there could be some tensions over the disapperance of so much American lands and citizens.

  It might actually be 1st some naval and air units going east.  After all the big threat is either invasion or air bombardment, with a silice of blockade going in.  The big and fast BBs the KoC can supply could be very unseful in closing the GIUK gap against raiders, although not sure they would have radar?  Some escorts would also be useful for protecting convoys, although again not quite sure about technology levels when it comes to ASW.  Plus of course there are bound to be differences in equipment standards, doctrine and the like so it would take some sorting out 1st.

  Not sure in terms of naval support against big raiders whether KoC BBs and supporting vessels or the small 'British' squadron would be politically the least awkward, especially if the latter left one of its flying officers in KoC.

  Good point.  Think they would identify with Canada anyway as that's part of the imperial federation their familiar with, even without the presence of a member of their royal family.  Our Britain is somewhat alien to them, possibly even more so because in many ways it would be very similar but with slight differences in assorted ways.  [With a POD nearly 160 years back there are bound to be some changes even if the broad sweep of events are in many ways similar.] 

  However that unit, with or without the prince/emperor would probably be politically the easiest unit to transfer for initial aid.  Mind you the OTL RN will be rather jealous when they see HMS Temeraire and HMS Bellerophon, 46,500 tons, 9x16" guns, 29kts.  Still they would be an even greater shock to any German raiders that run into them.

  Very true.  The KoC makes up for it to a degree but they probably don't have the same level of expertise in carrier warfare.  Which could be a problem.  Plus that they would have to foreward base to Pearl which could be awkward. Unless they go all the way to Singapore with their Pacific fleet. 

  Just had a nasty thought in terms of whether the KoC big ships could fit through the Panama canal, which could be a problem.

  Very true and of course the primary British need would probably be escort vessels for the convoys, although KoC ships escorting convoys into New York could be a bit awkward for a while.  Mind you they could just escort them to Halifax and also once things such as standards get sorted out this Canada has a bloody big industrial base so it could largely replace the US for most items, oil possibly being an exception.

  Good point.  I simply haven't thought of that.   Suspect given the circumstances there would be at least an experimental armoured division, although since the last big war ended in 1909 there might not be the same push for motorised units.  However given that dragged on because of the problems forcing Russia to make peace and the size of a potential war in N America there might be an incentive there.  Our Britain was already converting to a fully motorised army before the war so probably at the least a lot of the regular units would be motorised and there are likely to be some form of tanks.

  Of course how standard equipment and doctrines and the like would be between the KoC and its new allies could be awkward.  Simply a slightly different standard screw size could foul up a lot of interaction.