The term war finance, a branch of defense economics, denotes a number of measures including fiscal and monetary initiatives to fund the expenditure of a war

War

War is a state of organized, armed, and often prolonged conflict carried on between states, nations, or other parties typified by extreme aggression, social disruption, and usually high mortality. War should be understood as an actual, intentional and widespread armed conflict between political...

. Such measures, broadly classified in three categories, are levy of tax

Tax

To tax is to impose a financial charge or other levy upon a taxpayer by a state or the functional equivalent of a state such that failure to pay is punishable by law. Taxes are also imposed by many subnational entities...

es, raising of debt

Debt

A debt is an obligation owed by one party to a second party, the creditor; usually this refers to assets granted by the creditor to the debtor, but the term can also be used metaphorically to cover moral obligations and other interactions not based on economic value.A debt is created when a...

s, and creation of fresh money supply

Money supply

In economics, the money supply or money stock, is the total amount of money available in an economy at a specific time. There are several ways to define "money," but standard measures usually include currency in circulation and demand deposits .Money supply data are recorded and published, usually...

. Thus, these measures may include levy of specific taxation, increase and enlarging the scope of existing taxation, raising of compulsory and voluntary loans from the public, arranging loans from foreign sovereign states or financial institutions, as also creation of money by the government or the central banking authority.

Throughout the history of human civilization, from the ancient time until the modern era, conflicts and wars have always involved raising of resources and war finance has remained, in some form or the other, a major part of any defense economy.