Ka cika wannan jumlar: A shekara ta 1854, an yi yaƙin basasa a ƙasar Nicaragua tsakanin jam'iyyar Legitimist (da ake kira Conservative Party), da ke birnin Granada, da jam'iyyar Democratic Party (da ake kira Liberal Party), da ke birnin León. Jam'iyyar Democrat ta nemi tallafin soja daga Walker wanda, don kauce wa dokokin tsaka tsaki na Amurka, ya sami kwangila daga shugaban Democrat Francisco Castellón don kawo "masu mulkin mallaka" har ɗari uku zuwa Nicaragua. Wadannan sojojin haya sun sami 'yancin ɗaukar makamai a hidimar gwamnatin Demokradiyya. Walker ya tashi daga San Francisco a ranar 3 ga Mayu, 1855, tare da kimanin mutane sittin. Bayan saukowa, an karfafa rundunar da 'yan gida 110. Tare da rundunar Walker ta kasance sanannen mai bincike da kuma dan jarida Charles Wilkins Webber, da kuma dan wasan Ingila Charles Frederick Henningsen, tsohon soja na farko na Carlist War,
Juyin Juya Halin Hungary, da kuma yakin da ke Circassia. Baya ga Henningsen, mambobi uku na sojojin Walker waɗanda suka zama jami'an Tarayya sune Birkett D. Fry, Robert C. Tyler, da Chatham Roberdeau Wheat.