They plan to use starvation tactics.
Provisions that are only for soldiers are army provisions.
This is a jukugo word that uses the on'yomi readings of the kanji. You haven't learned either of these readings yet. Geez, sorry. But here's a mnemonic to help you:
The army said it would provide you with some army provisions. That's great! You go to the drop site where the provisions are, and the only thing there is the only thing you need: a rowboat to get across the river. "heyo! a row boat," (ひょうろう) you say out loud. You're pretty happy that you have a row boat.