[Non-Sequitur]

Here's a link to information on the Connecticut militia and service during the War of 1812 Link

Here's a link to information about the Massachusetts militia: Link

So it seems both states did mobilize their militia for the war effort. Did they serve outside of the state? I don't know. I doubt it since there was almost no land action outside of the abortive invasion of Canada from Detroit and the campaign around Washington in 1814. I know that the New England militia didn't participate in that campaign, but neither did militia from South Carolina, Virginia, North Carolina, or Georgia. The U.S. Navy and privateers operated from New England ports, I do know that.

[eyespysomething]

During the War of 1812, weren't the NE states British-sympathetics, since they were doing most of the trading with Britain?

[4CJ]

So it seems both states did mobilize their militia for the war effort.

To defend THEMSELVES and not the union of states.