▁on ▁cons cription ▁and ▁commerce . ▁ ▁Land ▁in ▁He arts ▁of ▁Iron ▁IV ▁is ▁divided ▁into ▁tiny ▁regions ▁known ▁as ▁provinces , ▁which ▁are ▁grouped ▁together ▁to ▁form ▁states . ▁Each ▁state ▁has ▁a ▁certain ▁amount ▁of ▁building ▁sl ots , ▁factory ▁sl ots , ▁and ▁ 1 0 ▁infrastr ucture ▁sl ots . ▁The ▁major ▁se as ▁and ▁o ce ans ▁( for ▁war ships ) ▁and ▁the ▁sky ▁( for ▁war plan es ) ▁are ▁similarly ▁divided ▁into ▁different ▁regions . ▁These ▁provinces ▁each ▁have ▁a ▁type ▁of ▁terrain ▁assigned ▁to ▁them ▁that ▁determ ines ▁how ▁well ▁different ▁types ▁of ▁units ▁will ▁perform ▁in ▁combat ▁there . ▁Div isions ▁are ▁placed ▁in ▁provinces ▁and ▁can ▁attack ▁enemy ▁units ▁in ▁adjacent ▁provinces . ▁How ▁well ▁divisions ▁perform ▁in ▁combat ▁depends ▁on ▁various ▁factors , ▁such ▁as ▁the ▁quality ▁of ▁their ▁equipment , ▁the ▁weather , ▁the ▁type ▁of ▁terrain , ▁the ▁skill ▁and ▁tra its ▁of ▁the ▁general ▁command ing ▁the ▁divisions , ▁and ▁the ▁mor ale ▁of ▁both ▁sides . ▁Techn ologies ▁can ▁be ▁research ed ▁to ▁improve ▁equipment ▁and ▁learn ▁new ▁military ▁do ctr ines , ▁among ▁other ▁things , ▁which ▁often ▁means ▁that ▁a ▁more ▁techn olog ically ▁advanced ▁nation ▁will ▁have ▁an ▁edge ▁in ▁combat . ▁If ▁a ▁division ▁( or ▁a ▁group ▁of ▁divisions ) ▁successfully ▁over wh el ms ▁an ▁enemy ▁province , ▁they ▁may ▁occup y ▁it . ▁Some ▁provinces ▁may ▁have ▁victory ▁points , ▁which ▁can ▁push ▁a ▁nation ▁closer ▁towards ▁capit ulation