The army marches on its knees.
By implication: The army cannot win if its soldiers are hungry. A steady supply of food to the fighting forces is the guarantee of their victory in the campaign.
(Modern Hebrew)
Translation
Expression (Hebrew)
הַצָּבָא צוֹעֵד עַל קֵיבָתוֹ
Definition (Hebrew)
בְּהַשְׁאָלָה: הַצָּבָא איננ יָכוֹל לְנַצֵּחַ אִם חַיָּלָיו רְעֵבִים. אַסְפָּקַת מָזוֹן סְדִירָה לַכּוֹחוֹת הַלּוֹחֲמִים הִיא עֲרֻבָּה לְנִצְחוֹנָם בַּמַּעֲרָכָה.
(הָעִבְרִית הַחֲדָשָׁה)