war expenditures; war costs
Refers to the financial cost of conducting a war, including military operations, equipment, and related expenses. Often used in historical, political, or economic contexts.
Raising war funds put pressure on the national finances.
The war expenditures for this conflict reached an enormous amount.
The allied nations bore part of the war costs.
The government raised war funds through tax increases.
As the war dragged on, the war costs kept mounting.
The nation poured enormous sums into the war effort.
軍費 is a somewhat old-fashioned synonym for war/military expenses that overlaps closely with 戦費 but is less common in contemporary Japanese.
Compound of 戦 (war) and 費 (expense, cost).