▁engine ers ▁and ▁support ▁branches , ▁although ▁differences ▁exist ▁( like ▁in ▁the ▁armed ▁forces ▁of ▁India , ▁Pakistan , ▁Singapore , ▁Malays ia , ▁Sri ▁L anka ▁( save ▁for ▁light ▁inf antry ) ▁and ▁Bang l adesh ). ▁ ▁Cer em ony ▁ ▁The ▁formation ▁for ▁the ▁para de ▁is ▁a ▁batt alion - s ized ▁( 1 0 0 – 5 0 0 ▁soldiers ) ▁formation ▁of ▁military ▁units ▁of ▁an ▁armed ▁forces ▁formation ▁from ▁Commonwealth ▁countries ▁( from ▁either ▁the ▁n avy , ▁army ▁and ▁air ▁force ). ▁From ▁ 4 ▁to ▁ 1 0 ▁companies ▁is ▁the ▁usual ▁size ▁of ▁the ▁para de ▁and ▁a ▁military ▁band ▁combined ▁with ▁a ▁corps ▁of ▁drums ▁and / or ▁pip es ▁and ▁drums ▁providing ▁the ▁cer emon ial ▁music ▁is ▁present . ▁The ▁para de ▁commander , ▁the ▁Field ▁Officer ▁holding ▁the ▁rank ▁of ▁a ▁major ▁or ▁lieutenant ▁colon el ▁( comm ander ▁or ▁lieutenant ▁commander ▁in ▁the ▁n avy , ▁wing ▁commander ▁or ▁squad ron ▁leader ▁in ▁the ▁air ▁force ), ▁takes ▁his ▁place ▁in ▁the ▁center ▁of ▁the ▁para de ▁field , ▁assist ed ▁by ▁the ▁Second - in - Command ▁and ▁the ▁Par ade ▁Ad j ut ant . ▁ ▁With ▁the ▁regiment al ▁colon el ▁in ▁chief ▁usually ▁being ▁the ▁review ing ▁officer ▁during ▁the ▁ceremony ▁( Other ▁instances ▁include ▁members ▁of ▁the ▁Royal ▁Family ▁in ▁the ▁United ▁Kingdom / Common wealth ▁real ms , ▁the ▁Governor ▁General ▁representing ▁the ▁Royal ▁Family , ▁the ▁Crown ▁Prince ▁or