OK yes you can do this and it will work but a few things I would recomend if you are going to do it.
I did this a lot when testing the late war AI btw its a lot of fun.
I assume you are proposing run the game AI v AI for 9 months and then take over at that point ? if yes I would recommend a list of house rules for yourself when doing it.
1. You will have a massive PP balance but the AI will in all liklihood have units that are restricted in unrestricted locations - the Ai doesnt use PP's and ignores restricted commands. So action 1 is spend your PP balance getting all units converted that need to be converted.
2. Depending on when you take over the AI may be below the Manchurian Garriosn level assuming you dont want the soviets active and are planning on taking over the Japanese side either mod the scenario to iuncrease thre Japanese strenght in Manchuria about 1500 points or plan on moving some forces overland from China into Manchuria immediately
3. Any unit you cannot or are unable to buy out with PP's moves to the least offensive location you can find and stays there often they can move to China overland replacing the forces you had to move into Manchuria.
4. Play PDU OFF the AI often ends up with some weird surpluses in aircraft because of the way upgrades work
5. When running the game AI v AI run it on historic difficulty level to minimise the AI only adjustments.
Do this and allow 2 - 3 weeks of turns to sort out what you inherit and its a great way to get a good game.
If taking over as the allies its a lot easier as the Allied AI doenst postion units as early as the Japanese AI as reaction forces
I tried this. Set up it up for both computer, continuous play, AI difficulty hard, and fired off WiTP Full Campaign, then wandered off to watch Leverage.
An hour later I stopped in and we were up to january 7th. I tried hitting F9 to allow the human to enter. F9 didn't work, and another week rolled by. I hit F a few times to save, got a glimpse of a window that said Autosave, hit CTRL-ALT-DEL to kill the game. I started the game, clicked on Load a Saved Game, then clciked on the autosave line. There was my game!
The carnage was well worth it. Britain lost PoW and Repulse on 12/7, the American lost 6 BBs at PH on 12/7. 6 Allied heavy cruisers are toast, and I haven't bothered to count the smaller vessels. The Allies are taking a toll on Japanese subs and cargo ships. Tyhe Japanese have seized Manila and are bearing down on Singapore
So, this is fun and so far, aside from the loss of so many American BBs, the strategic position looks about the same.
So, anyone know why F9 didn't work?