Camping outdoors—setting up tents and staying temporarily; also used for military encampments. In everyday speech, 'キャンプ' is more common.
夏休みに山で野営をする計画だ。
We plan to camp in the mountains during summer vacation.
軍隊はその地域で一夜野営した。
The troops encamped in the area for one night.
野営地には水や食料の準備が必要だ。
You need to prepare water and food for the campsite.