Now we're getting to the larger conflicts in North America. The one we're covering in this post is the War of 1812. The one the US came very close to losing, but gave us our some of our most lasting legacies, like the Star Spangled Banner and the birth of US naval power. To me this is one of the most interesting, but most unconsidered time periods to reenact.
The largest (and really only umbrella group) group I could find on the 'net was the Fort Erie site, which seems to be the main springboard to this part of the hobby and its associated groups. Another site is the Jefferson Patterson park and museum site, which hosts an annual battle for the period. Fort Niagra is doing a Grand Tactical that looks pretty nifty.