Which government branch authorizes military spending?

I was having a discussion about roles in the government, particularly when it comes to the military. Which branch of government would be responsible for authorizing military spending? This is pretty important for my civics project. Thanks in advance!

The U.S. government branch responsible for authorizing military spending is the legislative branch, specifically the U.S. Congress. The responsibility of setting budgets, including that of defense, resides with Congress. This process generally starts in the House of Representatives.

Here's a basic outline of how the process works: the President submits a budget request to Congress which includes a proposal for military spending. The budget committees in both the House and the Senate examine this proposal, and then draft a budget resolution that offers a broader outline of federal spending. Following that, the Appropriations committees in both chambers determine the specific funding levels for all discretionary programs including the military.Finally, both the House and Senate must pass the budget, after which it moves to the President to be signed into law. If the President vetoes the budget, it would go back to Congress, where it would require a two-thirds majority in both chambers to override the veto.