What event did the british think would divide the colonies and shatter their morale?

They planned to invade upper New York by way of Lake Champlain and to proceed down the Hudson River to New York City.

“the battle of stalingrad is not a turning point necessarily in strategic terms, because a lot more has to be done before the soviets can be certain of defeating germany,” says renowned world war ii historian richard overy. the germans had fought nearly a thousand miles across the soviet union to get to stalingrad.

i need the diagram.