▁Aust ro - Pr uss ian ▁War ▁against ▁Austria ▁in ▁ 1 8 6 6 , ▁including ▁the ▁Battle ▁of ▁König gr ätz . ▁ ▁Franco - Pr uss ian ▁War ▁ ▁In ▁the ▁Franco - Pr uss ian ▁War ▁of ▁ 1 8 7 0 - 7 1 , ▁the ▁Corps ▁formed ▁part ▁of ▁the ▁ 2 nd ▁Army . ▁ ▁It ▁saw ▁action ▁in ▁the ▁batt les ▁of ▁Be aum ont ▁and ▁Sed an , ▁and ▁in ▁the ▁Sie ge ▁of ▁Paris . ▁ ▁Pe ac etime ▁organisation ▁ ▁The ▁ 2 5 ▁pe ac etime ▁Corps ▁of ▁the ▁German ▁Army ▁( Gu ards , ▁I ▁- ▁XX I , ▁I ▁- ▁III ▁Bav arian ) ▁had ▁a ▁reason ably ▁standard ised ▁organisation . ▁Each ▁consisted ▁of ▁two ▁divisions ▁with ▁usually ▁two ▁inf antry ▁brig ades , ▁one ▁field ▁art illery ▁brig ade ▁and ▁a ▁caval ry ▁brig ade ▁each . ▁ ▁Each ▁brig ade ▁normally ▁consisted ▁of ▁two ▁reg iments ▁of ▁the ▁appropriate ▁type , ▁so ▁each ▁Corps ▁normally ▁commanded ▁ 8 ▁inf antry , ▁ 4 ▁field ▁art illery ▁and ▁ 4 ▁caval ry ▁reg iments . ▁There ▁were ▁exceptions ▁to ▁this ▁rule : ▁V , ▁VI , ▁VII , ▁IX ▁and ▁XIV ▁Corps ▁each ▁had ▁a ▁ 5 th ▁inf antry ▁brig ade ▁( so ▁ 1 0 ▁inf antry ▁reg iments ) ▁II , ▁XIII , ▁XVIII ▁and ▁XX I ▁Corps ▁had ▁a ▁ 9 th ▁inf antry ▁regiment ▁I , ▁VI ▁and ▁XVI ▁Corps ▁had ▁a