I agree with both posters. So the conclusion from that is that putting the 3 ANZAC fighters +2inf on Java A1 with a max turtle is an effective block to the J3 DOW version of this strategy. In that strategy, you have to assume that bombards are able to be blocked and troops can also return from the islands.
@Argothair:
I’m unclear on how/why you lose 3 infantry attacking Java – what’s on Java besides 3 ANZAC fighters? Are you assuming all 3 of the fighters score a hit?
The 2 inf I’m putting on Java A1 should hit 0.67 inf in the first round and can pretty easily force a second round especially if there isn’t a bombard. Battle calc: https://goo.gl/hrKKcc
You could also take Java as UK with 2inf from Malaya and then reinforce with 1inf 1AA Gun + the 3ftr as ANZAC. This may be optimal, I’m not completely sure.
Optimal UK1 buy in this case would be 3inf 2mech which defend the same as 5inf but can retake either Shan State or Yunnan.
I would discount the possibility of a round 1 allied DOW on Japan with such positioning by Japan.
Next question is if the allies do this block, can Japan change up to a J2 DOW strategy which will be as good? With only 1TT in SZ6, it probably needs to bypass The Philippines. You may bypass attacking Sumatra as Japan because you’re only going to get the money as plunder and better to concentrate your attacks. So let’s say that you can still attack India J3 with 2inf 3art 1arm from 4TTs but you can probably have bombards if you can block SZ39 and SZ41 as well as SZ42.
Interestingly, such a battle seems to work out for Japan, with a -35TUV from attacking India and 91% chance of taking the territory: https://goo.gl/i66VFU . Given that you’ve also have a +22 TUV from hitting Java the investment would be paid off quickly if the dice come out average.
Do you still need the naval base for that plan? I would say so. Without the naval base, UK can use its Cruiser and DD to block SZ37 (Malaya) and SZ43 (Borneo) and prevent the attack on Java.
In fact, even with the naval base, UK can use all 3 of its ships as blockers including SZ44 (Celebes) to prevent an attack on Java. Should they? I think so but only if Japan can bring in its land based planes J3, which UK doesn’t know UK1. If USSR are staying home and not helping China, I think you have to assume that Japan will get a landing field. They can use an all air attack on Szechwan and/or Kweichow J2 to prevent the Chinese from recapturing Yunnan. USSR can use its mobile troops from Sikang to retake Yunnan and UK can use some mechs to retake Shan State, providing that Burma is still UK owned.
One thing Japan might do J1 is move the SZ6 TT to SZ33 (Carolines). That makes it too hard to block out from Java but then Japan wouldn’t be able to take Java without losing planes or good dice.
I think I’ve just explained the nearly perfect block to the Calcutta or bust strategy. Is it costly? Absolutely, given that you’ll lose the UK BB. It’s also costly for Japan given that they’ll lose a lot of their ground units and not have many reinforcements for a long time.
I would wonder about getting on India J4 after such a move. Technically, only 3IPC of Calcutta income is not able to be convoyed off so if the stars align you may only have to fight one more infantry on a J4 assault. I would suppose you would hit The Philippines J2 in that scenario which then threatens SZ54 given that you’ve taken out the ANZAC planes.