▁and ▁a ▁top ▁down ▁view , ▁with ▁different ▁controls ▁to ▁man eu ver ▁the ▁plane ▁on ▁each ▁view . ▁It ▁is ▁in ▁this ▁mode ▁that ▁the ▁actual ▁battle ▁takes ▁place , ▁where ▁the ▁player ▁must ▁shoot ▁down ▁enemy ▁plan es ▁without ▁being ▁shot ▁down , ▁or ▁shoot ▁motor cy cles ▁or ▁tr uck ▁t ires ▁without ▁hitting ▁the ▁ground . ▁ ▁A ▁wise ▁player ▁would ▁protect ▁his ▁fact ories ▁and ▁air field ▁from ▁the ▁motor b ikes ▁and ▁tr uck s , ▁which ▁destroy ▁those ▁structures ▁upon ▁contact . ▁Once ▁these ▁ground ▁vehicles ▁are ▁gone , ▁a ▁heat - se ek ing ▁ro cket ▁is ▁launched , ▁target ing ▁the ▁player ▁mer cil ess ly . ▁Dest roy ing ▁the ▁ro cket ▁ends ▁the ▁wave . ▁ ▁At ▁the ▁end ▁of ▁each ▁wave , ▁the ▁player ▁is ▁given ▁extra ▁plan es ▁based ▁on ▁any ▁remaining ▁fact ories . ▁The ▁waves ▁are ▁designated ▁by ▁letters ▁of ▁the ▁Greek ▁alphabet . ▁Once ▁all ▁the ▁player ' s ▁plan es ▁are ▁destroyed , ▁the ▁game ▁is ▁over , ▁and ▁a ▁rank ▁is ▁assigned ▁corresponding ▁to ▁the ▁highest ▁wave ▁reached : ▁Al pha ▁Turkey , ▁B eta ▁Begin er ▁[ s ic ], ▁G amma ▁Green hor ne ▁, ▁etc . ▁ ▁See ▁also ▁List ▁of ▁MS - D OS ▁games ▁ ▁Category : D OS ▁games ▁Category : D OS - only ▁games ▁Category : 1 9 8 4 ▁video ▁games ▁Category : Video ▁games ▁developed ▁in ▁the ▁United ▁States <0x0A> </s> ▁The ▁Second ▁War ▁of