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But you also have an indirect-fire unit in range. Let's say you and the enemy each have a medium tank about to face off in a duel. Making wise combat decisions can keep your units healthy.Take the time each turn to survey these unique weapons and avoid moving any of your units there.
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You'll suffer unnecessary damage and could leave the unit extremely vulnerable to a future attack. You don't want to move any of your units into the firing range of an enemy weapon. In the same way you can check any enemy unit to determine its movement or firing range, you can also check the firing range of any of these unique weapons. Several campaign missions feature unique enemy weaponry, such as large cannons or lasers.To assist in achieving a high technique score, build lots of units near the end of the mission so your total units produce is much higher. Finally, to achieve a high technique rating, you must not lose more than 20% of your units produced or what you begin the mission with. To achieve a high power rating, you must be efficient in destroying enemy units (10% in a single day). To achieve a high speed rating, simply complete the mission as quickly as possible. Finishing the campaign with an average of an S-rank unlocks Sturm as a usable CO in non-campaign games. A combination of all three ratings determines your rank for the mission (S-rank is the best while A, B, C, etc follow from there). The categories are speed, power, and technique. You're rated on three categories in each campaign mission.Take advantage of this by checking nearby enemy units' attack ranges before moving, and then move right outside their range so you draw them within yours to get the initiative the next turn. One of the most important things to remember about combat is that if you have the same unit as the enemy, and the same number of hit points, you will almost always do more damage if you are the one initiating battle.This section offers general strategies for succeeding in Advance Wars 2: Black Hole Rising campaign missions.