The Israeli military censor is like a big boss who checks all the information that gets published or shared about the military in Israel. They make sure that nobody is saying anything that could hurt their soldiers or the country's safety.
When people want to talk or write about the military, they have to show their work to the censor first. The censor will read or watch everything and make sure it's okay to be shared with others. If they see anything that might be dangerous, they'll tell the person to change it or not share it at all.
Sometimes, the censor might tell people not to share information at all. They do this to make sure that nobody who shouldn't know gets information that could be harmful.
So basically, the Israeli military censor is like a big boss who makes sure everything being said or shared about the military is safe and doesn't hurt anyone.