The two available infantry units are of rather large size, this would consume a lot of man power. This takes large numbers of men to form one unit. Say that I want to form a defensive line along a 5 hex front, but due to the force pool I can only build an army or a 3 corps, this leaves a large gap in the line. To fix this maybe a division size unit can be created. This would use less men, but give more units to cover a front. Maybe the option to stack divisions and create corps or stack a few corps to create an army could also be created. The last idea may be a bit detailed for those who like the simple play of SC, but its only a dicsuusion.