draw down
• withdraw money from a fund or loan facility.
• "I'm not actually going to be drawing down any of the loan until early 1999"
• reduce the size of a military force in an area.
• "more had to be done before the US could begin to draw down its forces in any significant number"
drawdown
noun
• a reduction in the size or presence of a military force.
• "the unit is the first to leave Germany as part of the drawdown"