Could Corrigidor hold out against the Japanese until aid could get there? My POD would be this: I know the Japanese brought up heavy artillery and shelled Corrigidor, the difference is, this time a mark XIV hits one of the freighters carrying ammunition, and explodes. The expeditions heavy artillery ammunition was on that one freighter, and this means they don't have ammunition to bombard Corrigidor and the other islands. Also the islands were supplied with sufficent food for 12 months, and the tanks that attempt to come ashore are met by Grant-Lees that had been saved back for a final defense. The Chi-Ha's never stand a chance, and Homma's last assault force is cut to ribbons. What happens next?