militia

n. 义勇军,自卫队,国民军

People gathered to form a militia to protect their town.

人们聚集起来，组成国民自卫队来保卫他们的城镇。

Only the president or a state govern or could call out the military or state militia.

只有总统或州长才能紧急召集军队或州人民自卫队。