Nothing. Their duty is to guard the tomb and there should be no reason at all to when they stop. When changing guards maybe but someone is still there watching.
It would be used that what is the first thing she did
1.) Monitored
Becuase it is in thier pooint of view
Hello! There are three commonly used rules when writing out numbers in literature.
The first one is numbers under "10" are written out as words (i.e 1-> one, 2-> two, 3-> three, ect)
The second one is if the number is representing a date, you write it in numerical form (i.e years stay in their number-forms)
The final rule is the one that applies for you is that if the number is the first word of the sentence, then you write it as a word instead of it's numerical form.
So the correct way you'd write your sentence is, "Twenty-six people posted messages to my blog in just thirty minutes."
