Hints
Think before you shoot. With Rising Sun's dynamic line-of-sight and night rules, it's often better to pass up that long-range shot in favor of sneaking closer to your prey.
Concentrate your firepower. Focus on one key hex and direct all nearby resources to disrupt/assault that hex. Remember, the frontal assault is not always the best method to carry a hex--especially if the enemy's front is protected by a natural barrier such as water.
Shoot smart. Focus your attacks on enemy machine guns first, mortars and field guns second, and straight-stick infantry platoons last.
Never underestimate the value of leaders. They enhance fire from their hex and improve the morale of their units, which keeps men from being disruptive and/or running away.