ps . ▁He ▁was ▁promoted ▁to ▁major ▁general ▁in ▁ 1 9 0 3 ▁and ▁to ▁lieutenant ▁general ▁in ▁ 1 9 0 6 . ▁Following ▁a ▁period ▁of ▁service ▁at ▁general ▁headquarters ▁in ▁ 1 9 0 8 , ▁Ar min ▁was ▁appointed ▁commander ▁of ▁the ▁ 1 3 th ▁Division , ▁station ed ▁in ▁Mün ster . ▁In ▁ 1 9 1 1 , ▁he ▁succeeded ▁Paul ▁von ▁H inden burg ▁as ▁command ing ▁officer ▁of ▁the ▁IV ▁Corps ▁in ▁Mag de burg ▁and ▁in ▁ 1 9 1 3 , ▁Ar min ▁was ▁promoted ▁to ▁general . ▁ ▁Family ▁▁ ▁He ▁married ▁on ▁the ▁ 1 1 ▁June ▁ 1 8 8 2 ▁ ▁Kl ara ▁Paul ine ▁August e ▁von ▁Vo ig ts - R h etz ▁(* ▁ 1 . ▁Oktober ▁ 1 8 5 9 ▁in ▁Berlin ). ▁She ▁was ▁the ▁daughter ▁of ▁Pr uss ian ▁general ▁Julius ▁von ▁Vo ig ts - R h etz . ▁A ▁son ▁Hans - He in rich ▁also ▁had ▁a ▁military ▁career . ▁As ▁Lieutenant ▁general ▁he ▁became ▁a ▁prisoner ▁of ▁war ▁in ▁ 1 9 4 2 ▁and ▁died ▁in ▁Russia ▁in ▁ 1 9 5 2 . ▁ ▁World ▁War ▁I ▁▁ ▁At ▁the ▁beginning ▁of ▁the ▁First ▁World ▁War , ▁Ar min ▁and ▁the ▁IV ▁Corps ▁were ▁a ▁part ▁of ▁the ▁ 1 st ▁Army ▁on ▁the ▁Western ▁Front , ▁where ▁they ▁fought ▁in ▁the ▁tren ch ▁war fare ▁that ▁defined ▁the ▁first ▁years ▁of ▁the ▁conflict