Event monitors must start with monitor_event and must end with an end_monitor, but the stuff you wish to happen when the event triggers must be inside. Your end_monitors are now immediately after your monitor_event, so nothing will happed when the event occurs. In the lower half of the script, your ifs aren't all paired with end_ifs.

Also "peasant" is not a unit ID.

Take my advice: start very simple, make sure what you have works, then add on. Writing more than a half-dozen lines of script without errors is difficult, particularly if you haven't done a lot of scripting.