World at Arms

This may come naturally as you play through, but as infantry units become pretty obsolete a little way into the game, you may need to grind this. You can train militia units for 90 coins and they take 10 seconds to train. Use six of these units in Quick Battles against tough opponents, and they will all die. Alternatively, if you still need campaign wins for “[B]War Hero[B], just train infantry and replay the first mission over and over again. You will lose a few each time but still win the battle, adding to you tally of losses and wins at the same time.