After five years of budget cuts and the drawdown from two wars, the U.S. Defense Department budget has shrunk by about 15 percent, according to the department's data.
Donald Trump wants to change that.
"I think under the leadership of Barack Obama and Hillary Clinton, the generals have been reduced to rubble. They have been reduced to a point that's embarrassing for our country," Trump said at NBC's Commander-in-Chief Forum in New York on Wednesday.
Trump has made a proposed buildup of the U.S. military a centerpiece of his wider agenda to "take back our country."
"I'm going to make our military so big, so powerful, so strong, that nobody — absolutely nobody — is gonna mess with us," Trump says in a video posted on his campaign website.
This week, Trump provided details on how he plans to boost defense spending and increase troop strength.
The plan includes raising the number of active Army troops from 475,000 to 540,000, raising the number of Marine battalions from 24 to 36, expanding the naval fleet from a planned 280 to 350 and adding more Air Force fighter aircraft to at least 1,200.
He has also said he'll modernize missile defense and cybersecurity, and ask his generals to present, within 30 days of taking office, a plan to defeat ISIS.
To pay for the expansion, Trump said he'll ask Congress to lift the so-called "sequester" spending caps that were enacted in the Budget Control Act of 2011. That would add roughly $450 billion to the federal deficit over the next decade, according to the Committee for a Responsible Federal Budget.
To offset that cost, Trump has pledged to find savings in other areas. Those include cutting spending that has not been formally authorized by a legislative committee. That would save about $150 billion, according to CRFB estimates.