▁and ▁if ▁inf antry ▁units ▁are ▁attacked ▁in ▁march ing ▁formation , ▁the ▁attack er ▁will ▁fire ▁a ▁vol ley ▁first , ▁potentially ▁inf lic ting ▁heavy ▁losses . ▁Art illery ▁units ▁cannot ▁fire ▁back ▁at ▁all ▁if ▁attacked ▁while ▁lim ber ed . ▁Caval ry ▁units ▁have ▁a ▁mounted ▁and ▁dis mount ed ▁formation ▁and ▁may ▁attack ▁in ▁either ▁one ; ▁mounted ▁caval ry ▁have ▁more ▁fire power ▁but ▁less ▁cover ▁which ▁results ▁in ▁higher ▁cas ual ties ▁while ▁attack ing ▁or ▁def ending . ▁Infantry ▁attacked ▁twice ▁in ▁the ▁same ▁turn ▁from ▁opposite ▁sides ▁will ▁be ▁caught ▁from ▁behind ▁by ▁the ▁second ▁attack ▁and ▁treated ▁as ▁if ▁it ▁were ▁in ▁march ing ▁formation . ▁ ▁Art illery ▁units ▁have ▁a ▁certain ▁range ▁of ▁t iles ▁they ▁can ▁hit ; ▁this ▁depends ▁on ▁the ▁type ▁of ▁gun ▁the ▁art illery ▁unit ▁is ▁equ ipped ▁with ▁as ▁well ▁as ▁terrain ▁ob stru ctions . ▁The ▁game ▁takes ▁into ▁account ▁the ▁capabilities ▁of ▁various ▁Civil ▁War ▁art illery ▁types ; ▁some ▁art illery ▁is ▁more ▁effective ▁on ▁long - range ▁targets ▁and ▁some ▁types ▁more ▁effective ▁at ▁close ▁range . ▁Art illery ▁may ▁share ▁a ▁tile ▁with ▁other ▁unit ▁types , ▁in ▁which ▁case ▁both ▁units ▁will ▁fire ▁a ▁vol ley ▁if ▁attacked ▁by ▁inf antry ▁or ▁caval ry . ▁When ▁attack ing ▁stack ed ▁units , ▁the ▁player ▁may ▁target ▁both ▁or ▁just ▁the ▁art illery . ▁The ▁def ender ▁can ▁fire ▁back ▁if ▁his ▁art illery ▁has ▁enough ▁range ▁for ▁counter -