Nyora kupfuurira kweiyi ndima - Carlson akarayirwa kuenda kuNicaragua muna 1930 somukuru mukuru muGuardia Nacional. Aimbova mukuru mukuru panguva iyoyo, akawana mubayiro wake wokutanga weNavy Cross nokuda kwokutungamirira varwi veMarines 12 kurwisa makororo 100 mukurwisa usiku kuti aparadze tyisidziro kuvarwi vake. Akarumbidzwawo nokuda kwezvaakaita pashure pokudengenyeka kwenyika kwa1931
muManagua, uye nokuda kwokuita mabasa soMukuru wePurisa muna 1932 na1933.