I am looking for a children's science fiction book that I read in 1975. I can only remember fragments of scenes from the book.
What I can remember:
- Possibly warring alien factions.
- The "good" alien befriends a group of school children and recruits their assistance.
- The children accompany the "good" alien on an adventure, when they realize that they do not have any food with them, the alien gives them a pill that provides them with all the nutrition that they require, and also tastes like whatever food the child thinks about.
- When caught by the "bad" alien(s) the children are shot with something (arrows?) that causes them to forget about the aliens entirely. All of the children except the youngest in the group are affected by the memory wipe. The youngest child then tries to restore the other children's memories and help the "good" alien.