 Nyorai kupfuurira kweiyi ndima - Pana April 4, 1864 akasimudzirwa kuva brigadier general weVazvipiri veU.S., kusvika pachiyero chaNovember 29, 1862. Akaiswa mukutungamira kwe3rd Brigade, 3rd Division muWilliam T. Shermans XV Corps. Matthies akatungamirira boka iri munguva yeVicksburg Campaign, achirwa muhondo yeJacksonuye mukurwiswa kweVicksburg. Munguva yekukombwa kwakatevera, brigade yaMatthies yakatumirwa ku7th Division yeXVII Corps. 