▁well ▁as ▁in ▁ant iter ror ism ▁operations . ▁T act ical ▁shield s ▁often ▁have ▁a ▁large ▁signs ▁stating ▁" P OL ICE " ▁( or ▁the ▁name ▁of ▁a ▁force , ▁such ▁as ▁" US ▁MAR SH AL S ") ▁to ▁indicate ▁that ▁the ▁user ▁is ▁a ▁law ▁enfor cement ▁officer . ▁ ▁Gallery ▁ ▁See ▁also ▁▁ ▁Esc ut che on ▁( her ald ry ) ▁ ▁References ▁ ▁Bibli ography ▁▁▁▁▁ ▁Schul ze , ▁André ( Hrsg .): ▁Mittel alter liche ▁K ampf es we isen . ▁Band ▁ 2 : ▁Krieg sh ammer , ▁Sch ild ▁und ▁Kol ben . ▁– ▁Main z ▁am ▁Rhein . ▁: ▁Z ab ern , ▁ 2 0 0 7 . ▁– ▁▁ ▁Sn od gr ass , ▁A . M . ▁ ▁" Ar ms ▁and ▁Arm our ▁of ▁the ▁Gree ks ." ▁Corn ell ▁University ▁Press , ▁ 1 9 6 7 ▁ ▁" The ▁Hop l ite ." ▁The ▁Class ical ▁Review , ▁ 6 1 . ▁ 2 0 1 1 . ▁ ▁Hell w ag , ▁Urs ula . ▁" Sh ield ( s ). " ▁Encyc lo pa edia ▁A eth iop ica , ▁Sieg bert ▁U h ll ig ▁( ed .), ▁vol . ▁ 4 , ▁ 6 5 0 - 6 5 1 . ▁Wies b aden : ▁Harr ass ow itz . ▁ ▁External ▁links ▁▁▁ ▁My arm our y . com , ▁The ▁Sh ield : ▁An ▁A brid ged ▁History