1)
What is the meaning of "va'Yitza'aku"?
1.
Rashi: They gathered via an announcement.
2)
Where in Gil'ad did they camp?
1.
Radak: This is the city that Bnei Machir ben Menasheh conquered. Now Amon camped there and planned to conquer it. Bnei Yisrael gathered at Mitzpah to fight them, and Amon returned to their land. Yiftach sent messengers to Eretz Bnei Amon, and went there to fight (because they retreated).
