About formation
head - the entrance of a army formation or procession; "The pinnacle with the column Innovative boldly"; "they have been at The pinnacle in the attack"UK:*British isles And perhaps other pronunciationsUK and possibly other pronunciations/fileɔːrˈmeɪʃən/US:USA pronunciation: IPA and respellingUSA pronunciation: IPA/fileɔrˈmeɪʃən/ ,United