Sentence:  The suspension of hostilities, and the retreat of the Bourbon forces towards the sea, again inspired the people with confidence and daring; so much so, that we were obliged to station <WSD>red-shirts</WSD> at the advanced posts, to prevent the collisions between the Sicilians and the Bourbon troops which would have ensued from the intense hatred of the former for the latter. 
Meaning of the word marked with <WSD> tags:  A follower of Garibaldi