A. Your topic was in the wrong place so I moved it for you.
B. Love and Peace is a item you can find during the course of the game. If you obtain it, you can use it
on enemy units and persuade them to join your army. The success rate is low, so save often and don't
waste it! It is also good to damage a unit, not enough to kill them, before use. Like Pokemon. Although
it will not work on unit leaders.
Ogres can be found in the wild, although they are a little rare. So I'd use it on something else. Like
Saturos or Angel Knights.