ORIGINAL: JohnDillworth
2. Japanese try to take it; Allies stop them at sea. Same ultimate result. Stuff in, Japanese out.
I don't think the Allies were in a position to do this. Taking on the full KB in the summer of 42 is just a quicker road to auto-victory. The allies have little to nothing to defend Karachi with. Certainly not enough to stop a full scenario 2 bunch of divisions. Once Karachi was taken, for all practical purposes, reinforcements stop. I this if AAR stops tomorrow (and I hope it does not) it at least provides the best clear roadmap to Japanese auto-victory I have seen in this forum.
KB, KB, KB!!!!! This obsession with the carriers! [:)]
An amphibious invasion of Karachi doesn't need the KB if it's a surprise. The RAF had diddly for anti-shipping models in early 1942. Some Stringbags, Albacores, miscellaneous other crappola.
That said, say they do use the KB. Per above, the USN MUST use its carriers, if only to allow the RN headspace to use its heavy skimmers, probably hiding out at Aden, to come in and clean off the invasion beaches. And the RN has some decent ships for that in the BB/CA range if they've been saved from earlier loss. Also, some of the Dutch metal might be sent northwest rather than die at Soerbaja.
Say the KB stays out of it. Maybe even out of the theater, making mischief elsewhere. Then the USN carriers devastate an amphib move on Karachi. There's no IJA LBA yet; it's still south of an Allied Bombay. (Although it'll be at Karachi soonest once it falls, and then the wormhole is useless. Bet(ty) on it.) There might be some mixing it up with the IJN BBs, but at worst the carriers get hurt, not sunk. But the landing beaches get swept more than likely.
As Nemo said yesterday, the IJN doesn't want a big carrier battle on the x4 VP basis. It would LOVE the Allies to roll over and let Karachi fall. To let Carrier Love rule the day. To have the big boys sit at Cape Town and watch, lest their paint be mussed. But that's not what they're for.
On land, the Japanese can't get the full Scenario 2 load of divisions to Karachi by land. Not and be in supply--the flanks would be enormous with Bombay untaken. Karachi needs to be an Inchon, and sealift isn't infinite. It would be a tough fight though, all the more reason for the Allies to intervene quickly, and keep supply off the beaches. Stowing the carriers in CT is not going to work--that's a month away, more or less. They need to be up the wormhole, which is a nice bit of sneaking and forethought. It would help if the sneaking happened before Socotra fell as well.
As I said, India is a naval campaign, which supports the anti-economic campaign ashore. Take Karachi, secure it, then get the non-industrial centers at Madras and Calcutta to self-fund Japanese ground supply needs and an air campaign on the west coast, then squeeze Bombay. Let the auto-reinforcements trigger. They'll rot at Aden if the wornhole is shut down. The few which poof into Karachi will die there, after eating up scarce supplies to activate devices.






