the British, Tecumseh's confederacy in the west and Iroquois in the east avoided pitched battles and relied on irregular warfare, including raids and ambushes that took advantage of their knowledge of terrain. In addition, they were highly mobile, able to march a day. Their leaders sought to fight only under favourable conditions and would avoid any battle that promised heavy losses, doing what they thought best for their tribes, much to the annoyance of both American and British generals. The indigenous fighters saw no issue with withdrawing if needed to save casualties. They always sought to surround an enemy, where possible, to avoid being surrounded and make effective use of the terrain. Their main weapons were a mixture of muskets, rifles, bows, tomahawks, knives and swords as well as clubs and other melee weapons, which sometimes had the advantage of being quieter than guns. Declaration of war On 1 June 1812, President James Madison sent a message to Congress recounting American grievances against Great Britain, though not specifically calling for a declaration of war. The House of Representatives then deliberated for four days behind closed doors before voting 79 to 49 (61%) in favour of the first declaration of war. The Senate concurred in the declaration by a 19 to 13 (59%) vote in favour. The declaration focused mostly on maritime issues, especially involving British blockades, with two thirds of the indictment devoted to such impositions, initiated by Britain's Orders in Council. The conflict began formally on 18 June 1812, when Madison signed the measure into law. He proclaimed it the next day. This was the first time that the United States had declared war on another nation and the Congressional vote was the closest vote in American history to formally declare war. None of the 39 Federalists in Congress voted in favour of the war, while other critics referred to it as "Mr. Madison's War". Just days after war had been declared, a small number of Federalists in Baltimore were attacked for printing anti-war views in a newspaper, which eventually led to over a month of deadly rioting in the city. Prime Minister Spencer Perceval was assassinated in London on 11 May and Lord Liverpool came to power. He wanted a more practical relationship with the United States. On June 23, he issued a repeal of the Orders in Council, but the United States was unaware of this, as