▁Motor ised ▁Anti - T ank ▁Division ▁would ▁look ▁like ▁this : ▁▁ ▁AP P - 6 ▁organization ▁chart ▁of ▁the ▁ 1 st ▁Marine ▁Ex ped ition ary ▁Force ▁( ME F ): ▁ ▁M IL - ST D - 2 5 2 5 A ▁AP P - 6 A , ▁Military ▁Symbol s ▁for ▁Land ▁Based ▁Systems ▁was ▁developed ▁directly ▁from ▁M IL - ST D - 2 5 2 5 A , ▁Common ▁War f ight ing ▁Sym b ology . ▁M IL - ST D ▁ 2 5 2 5 A ▁was ▁the ▁American ▁standard ▁for ▁military ▁symbols . ▁The ▁cust od ian ▁of ▁AP P - 6 ▁is ▁the ▁United ▁States . ▁AP P - 6 ( A ) ▁remained ▁un changed ▁as ▁work ▁on ▁harm on izing ▁it ▁with ▁AD at P - 3 , ▁NAT O ▁Message ▁Text ▁Form atting ▁System ▁was ▁carried ▁out . ▁In ▁ 1 9 9 9 , ▁AP P - 6 ▁was ▁moved ▁from ▁the ▁Army ▁Service ▁Board ▁to ▁the ▁J oint ▁Service ▁Board . ▁With ▁this ▁move , ▁AP P - 6 ▁was ▁placed ▁under ▁the ▁Information ▁Exchange ▁Re quire ments ▁Harm on ization / Message ▁Text ▁Format ▁Working ▁Group . ▁The ▁I ER H / M TF W G ▁then ▁formed ▁the ▁J oint ▁Sym b ology ▁P anel ▁to ▁provide ▁configuration ▁management ▁of ▁AP P - 6 ▁with ▁the ▁US ▁cust od ian ▁as ▁the ▁chairman . ▁With ▁the ▁rat ification ▁and ▁prom ul g ation ▁of ▁AP