Ku sii qor faqradan - Sanadkii 1863, qeybta waxaa loo wareejiyay Grand Gulf, Mississippi, oo ah meel muhiim ah oo ku taal Wabiga Mississippi. Ka dib markii Major General Ulysses S. Grant uu ka soo dejiyey ciidamada Union ee Bruinsburg, Landis Battery wuxuu qeyb ka ahaa difaaca Confederate ee dagaallada Port Gibson
bilawgii Maajo, kadibna Landis ayaa la dalacsiiyay waxaana taliye ka noqday John M. Langan Dabayaaqadii bishaas, waxay ka qeyb qaadatay Dagaalkii Champion Hill. 17-kii Maajo, baytarigu wuxuu qayb ka ahaa ciidamada Confederate-ka ee loo xilsaaray inay qabsadaan isgoyska Webiga Weyn ee Weyn ee Webiga Weyn ee Weyn, halkaas oo laga yaabo inay ku dhacday laba qori. Landis's Battery ayaa markii dambe dagaal ku galay intii lagu jiray go'doominta Vicksburg. Intii ay halkaas joogtay, baytarigu wuxuu gacan ka geystay ka hortagga weerarrada Midowga 22kii Maajo. Landis's Battery waxaa la qabsaday markii ciidanka Confederate ee Vicksburg ay is dhiibeen 4-tii bishii Luulyo. In kasta oo raggii ka badbaaday batteriga la isweydaarsaday, batteriga dib looma abaabulin ka dib Vicksburg; taa bedelkeeda, waxaa lagu dhex daray Guibor's Missouri Battery oo ay weheliso Wade's Missouri Battery.