Rubuta ci gaba don wannan sakin layi - A farkon yakin duniya na farko, Neidholdt da rundunarsa an tura su zuwa yammacin gaba
, inda ya shiga cikin Siege of Namur. A farkon 1915, an tura rukunin sa don yaƙi da sojojin masarautar Rasha kusa da Bzura. Tsakanin Maris 1915 da Afrilu 1917 Neidholdt ya yi aiki a wurare daban-daban a rundunar soja, sashen, brigade, da kamfanoni a gabashin gabashin. Bayan Reichswehr ya zama Wehrmacht, ya yi ritaya daga rundunar a ranar 21 ga Mayu, 1935. A ranar 1 ga Disamba, 1938, ya dawo a matsayin jami'in soja kuma a cikin bazara na 1940, ya jagoranci rundunar soja a Yammacin Yamma sannan ya umurci rundunar sojojin soja na ɗan gajeren lokaci a Poland kafin ya ƙare a jerin sunayen babban kwamandan sojojin.