Head over to the War-tables (Northern main lobby - marked with a tank).
Bet on ante (and on tie if wanted).
Ante pay-out is 1:1 , tie pay-out is: 1:10
Repeat this step until a Tie occurs.
Select "Go to War" - this will require you to bet double your ante bet, but will pay-out for the initial bet-sum.
(If you bet on tie aswell - You will receive the pay-out for it at the end of the game).
Repeat these steps 10 times without leaving the table (in one sitting).