Military spending is $934 billion in the 2021 budget. It's spread out among different agencies and budget categories, so you must add it all together. It includes:

    Defense Department base budget: $636 billion.
    DoD Overseas Contingency Operations: $69 billion.
    Departments that support defense: $228 billion. They include the Department of Veterans Affairs ($93 billion), State Department ($48 billion), Homeland Security ($48 billion), FBI and Cybersecurity ($10 billion), and the National Nuclear Security Administration ($17 billion).

This is 63% of all the discretionary spending in the budget, i.e. the budget outside of mandatory payments such as Social Security.