▁after ▁leaving ▁the ▁army , ▁G le en ▁was ▁retired ▁as ▁Province ▁Commander ▁( Land com thur ) ▁ ▁of ▁the ▁Te ut onic ▁Order ▁in ▁the ▁B ail i wick ▁of ▁Ald en ▁B iesen . ▁But ▁in ▁ 1 6 4 4 ▁he ▁was ▁called ▁out ▁of ▁ret irement ▁by ▁the ▁Emperor ▁on ▁the ▁advice ▁of ▁the ▁West phal ian ▁Circle . ▁ ▁G le en ▁and ▁his ▁troops ▁joined ▁Mer cy ▁at ▁A sch affen burg , ▁and ▁advanced ▁with ▁the ▁arm ▁to ▁Sw ab ia . ▁There ▁G le en ▁commanded ▁the ▁right ▁wing ▁at ▁the ▁dis astr ous ▁battle ▁of ▁All er heim ▁( Second ▁Battle ▁of ▁N örd lingen ). ▁Mer cy ▁was ▁killed ▁and ▁G le en ▁was ▁captured , ▁but ▁after ▁a ▁short ▁capt ivity ▁G le en ▁was ▁ex changed ▁for ▁the ▁French ▁General ▁Gr amm ont ▁and ▁then ▁took ▁command ▁of ▁the ▁B ever ian ▁army . ▁ ▁In ▁ 1 6 4 6 , ▁G le en , ▁under ▁the ▁command ▁of ▁Leopold ▁Wilhelm , ▁took ▁part ▁in ▁the ▁campaign ▁against ▁Tur enne ▁and ▁W r angel , ▁and ▁in ▁March ▁of ▁the ▁following ▁year , ▁after ▁the ▁elect or ▁of ▁Bav aria ▁concluded ▁ce ase fire , ▁he ▁was ▁asked ▁to ▁res ign . ▁He ▁died ▁in ▁ 1 6 5 7 ▁at ▁Ma astr icht ▁or ▁Al ten b iesen , ▁with ▁the ▁death ▁of ▁his ▁nep hew , ▁his ▁titles ▁became ▁ext inct . ▁ ▁Notes ▁ ▁References ▁