Nyorai kupfuurira kweiyi ndima - Muna 1806, mukati meHondo yeChitatu Chibvumirano
Grawert akatungamirira boka revarwi uye akapinda muhondo yeJena. Pashure peZvibvumirano zveTilsit, akagadzwa kuva Gavhuna Mukuru weSilesia. Pachinzvimbo ichi Grawert akakwanisa kuwana ruremekedzo rwavakuru vakuru veFrance uye rwaNapoleon pachake. Pakupedzisira vakamukumbira semutungamiri wePrussian Auxiliary Corps iyo, sechikamu cheJacques MacDonald's X Corps yeGrande Armee, yakabatanidzwa mukupinda kweFrance kweRussia muna 1812. Pakuvamba mumushandirapamwe wacho Grawert akatungamirira uto rake paEkau. Ikoko akadonha pabhiza rake ndokutyoka gumbo rake, zvichimuita kuti arege basa rake achienda kuna Lieutenant General Ludwig Yorck.