Curonians formed an alliance with the Semigallians, resulting in a joint attack against Riga in 1228. In the same time, according to the Livonian Rhymed Chronicle, Curonians and Samogitians were known as "bad neighbours".

In the middle of the 13th century, the Curonian army included lightly armed soldiers who fought with spears, shields, fighting knives and axes, formed into an infantry platoon. Archers constituted