What is the objective of the game of war and how is it played?

The objective of the game of war is to win all the cards by playing higher value cards than your opponent. The game is played by dividing the deck evenly between two players, who then take turns flipping over the top card of their deck. The player with the higher card value wins both cards and adds them to their pile. If there is a tie, a "war" occurs where players place three cards face down and then reveal a fourth card to determine the winner. The game continues until one player has all the cards.