'Guards' in the Bible

"We found the jail locked securely and the guards standing at the doors, but when we opened them, we found no one inside."

On that very night before Herod was going to bring him out for trial, Peter was sleeping between two soldiers, bound with two chains, while guards in front of the door were keeping watch over the prison.

After they had passed the first and second guards, they came to the iron gate leading into the city. It opened for them by itself, and they went outside and walked down one narrow street, when at once the angel left him.

When Herod had searched for him and did not find him, he questioned the guards and commanded that they be led away to execution. Then Herod went down from Judea to Caesarea and stayed there.