# Overseas Contingency Operations
**OCO** — the war-funding account used from the late 2000s through 2021, nominally for
the costs of operations in Iraq and Afghanistan, but in practice the Pentagon's
favorite **cap-evasion device**. Because OCO was designated emergency/contingency
funding, it sat **outside the [[Budget Control Act of 2011]]** —
so both parties used it as a slush fund to push base-budget defense spending above the
limits without formally breaking them.
## How the gimmick worked
- Regular [[National Defense]] spending was capped; OCO was not.
- Tens of billions of genuinely *base* (non-war) Pentagon costs were relabeled "OCO"
to fit under the caps — a bipartisan accounting fiction that the GAO and budget
hawks repeatedly flagged.
- OCO was formally **ended around FY2021** once the caps lapsed and the wars wound
down, folding its functions back into the base budget.
## The RWKB angle
OCO is the cleanest case study in [[Budget Gimmicks]]: a category invented to make the
defense budget appear to comply with caps it was actually busting. It shows that the
caps "disciplining" spending were theater — the money flowed anyway through a side
door, with bipartisan consent. The same dynamic recurs whenever a [[Discretionary vs Mandatory Spending]] limit collides with a politically protected priority
like [[National Defense]] — see the $350B mandatory defense supplemental in the
[[Federal Budget FY2027 Request]].
## Related
- [[Budget Gimmicks]] · [[National Defense]] · [[Supplemental Appropriations]]
- [[Sequestration]] · [[Budget Hub]]