Rubuta ci gaba don wannan sakin layi - Frederick I ya nada shi marshal na filin a 1712, Leopold ya bambanta kansa don nasararsa a lokacin Yaƙin Nasara na Spain. Daga baya aka nada shi kwamandan sojojin Prussian-Saxon a lokacin Babban Yakin Arewa da Sweden. Leopold abokin aboki ne na Frederick William I. Babban babban aikinsa na aikin soja shine jagorancin sojojin Prussian zuwa nasara a kan Saxons a yakin Kesselsdorf
a 1745 a lokacin yakin Silesia na biyu.