A few things to remember:
tanks can blitz thru a territory that contains an enemy AA gun or factory.
If your ally builds a additional factory and his home territory is under enemy occupation and the enemy takes the territory that he built the factory in, then you can take that factory and place your units in that factory as long as his capital is under enemy occupation.
Planes can move totally independently of the carrier, So the carriers move is no consequence as long as the fighter moves no more than 4 spaces.
Subs cant move thru SZ that contains enemy destroyers. But the vice versa of this is possible.
Bombers that have paratrooper capability can still attack, but no SBR. Also, both the infantry allocated for Paratrooper must start with the bomber and the drop is in the first enemy land zone entered.
Seems to be some issue on sea invasions and the rules regarding attackers ability to retreat. To me it seems they can retreat land units.
Kwangtung can be occupied by the Chinese, but UK gets the IPC and its not counted as a Chinese territory.
The US fighter that starts in China can never be rebuilt or placed. NO other units can enter China, but can enter Manchuria, Kiangsu, or Kwangtung. So the Soviets can capture Manchuria and UK or USA can place air units or whatever in that space.
Placement of fighters: you can place a new fighter built on a carrier ( even an allies carrier) as long as its adjacent from your factory.
You can only offload into one enemy land territory. No bridging into two enemy territory’s from one transport.