Ka dib markii ay talada la wareegtay Countess Amalie Elisabeth bishii Sebtember 1637, Geyso waxay door weyn ka qaadatay ololihii militariga ee Langravate ee ka dhanka ahaa Landgraviate ee Hesse-Darmstadt. Xilligii dayrta ee 1641, wuxuu amar ku bixiyay difaaca Dorsten ugu dambeyntii wuxuu ku wareejiyay Darmstadt shuruudo wanaagsan. Sanadkii 1644, waxaa u yeeray Mareeyaha Sweden Lennart Torstensson oo ka codsaday in uu ka caawiyo hareeraynta ciidanka Matthias Gallas ee xilligaas ka howlgala agagaarka Magdeburg. Geyso 2,300 oo nin ayaa ka qeyb qaatay socod adag oo ay ku mareen goobo ay daadadku saameeyeen, iyagoo ku soo gaaray waqtigii loogu talagalay inay ku arkaan burburka ciidanka Imperialist. Bishii Agoosto 3, 1645, geesinimada Hessians waxay gacan ka geysatay guusha Dagaalkii Nördlingen (1645)
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