How did the soldiers feelings about McBeth changed over the course of the play

At the beginning of the play they thought Macbeth was brave and honorable, but now they think he is bloodthirsty tyrant at the beginning of the play, they thought Macbeth was insane but now they feel that he will be good leader and king.

you need to post the passage so we know what you’re talking about

faithful servants eumaeus and philaetius:

his ragged vest then drawn aside disclosed the sign conspicuous, and the scar exposed: eager they view'd, with joy they stood amazed with tearful eyes o'er all their master gazed:

these servants know ulysses by the scar he got when he was a child - so when he showed them the mark, they immediately knew this is truly their master and they hugged him, finally starting to believe his words.