Watch Online Free on Watchseries. First Invasion: The War of 1812, a History Channel documentary that first aired in 2004, portrays a young United States of America "on the brink of annihilation" as it battles the largest and most powerful empire on earth. Critics say the documentary is far too pro-American, and that it ignores or downplays crucial elements of the War of 1812. Others praise First Invasion for its compelling presentation of a far too neglected period of history.