Ambuscades of American patrols became almost a daily occurrence and resulted in so many casualties for the invaders , that by March 1900 , no patrols were sent out .
American were 40 - 50 strong .
Ambuscades of American patrols became almost a daily occurrence and resulted in so many casualties for the invaders , that by March 1900 , no patrols were sent out unless they were 40 - 50 strong .