Support_(SMAC) affects the support costs of military units. the lower your score here, the more of your units you'll have to expend minerals to support -4: -2 minerals/unit; no free minerals for new base -3: -1 mineral/unit; no free minerals for new base -2: Support one unit free/base; no free minerals for new base -1: 1 unit/base free 0: 2 units/base free 1: 3 units/base free 2: 4 units/base free 3: 4 units/base free OR base population units free!!