I'd be okay with cutting nearly all military spending. But I also know exactly how realistic that is.
So, you would be ok with making ~2.5 million people directly unemployed and any knock on effects that might have to the communities those people live in?
I'm ok with the idea of the Government having work schemes for people, but I don't see why it has to involve blowing shit up.
One of the good things that came out of the Great Depression for the US was a world class highway system, and (possibly) the Hoover Dam.
Currently there are roads in need of maintenance, a bunch of bridges that are falling apart because of lack of maintenance, and cities with hundreds of miles of leaking sewer and water mains that are more than a hundred years old, and being replaced at a few miles per year.
Wouldn't the US be better off if it put some of it's work scheme people into repairing or building new infrastructure rather than preparing to blow up other people's? Take some of the very clever people currently designing Advanced Strike Fighters and put them to work designing sustainable technologies for cars and cities that reduce the USA's dependence on fossil fuels?
I've read an article once many years ago which I'm probably about to butcher, but which discussed the pyramids of Egypt as a work scheme.
For a good proportion of the year, people couldn't work in the fields because either they were underwater when the Nile flooded, or there was no water to grow things. Fortunately, the growing season was incredibly productive so they could feed everyone with the production from that. The problem was distribution over time.
What do you do with your population when they've got six months to sit around doing nothing? How do you stop them turning all their spare grain into beer and spending 6 months drunk and causing trouble until they run out of food because they drank it and the new crops haven't come in yet? Especially if not everyone has enough maths to tell how much they can eat per day and still have food until the next crop comes in?
Answer: Pyramids!
Your pharaoh grabs enough of the grain produced during the good times that he can feed the people in the bad times. He can make use of the organisation and economies of scale to build granaries to store it all, and then during the non-growing season he pays people to work on his pyramids. Thus people have work all year round, and always get enough food to eat.
One advantage of pyramids is that because they aren't actually practically useful, if they finish one, they can build another one.
Cathedrals in the middle ages were theorised to potentially meet a similar need. After all, if one cathedral is good, two must be better right? And it doesn't matter if it takes 500 years to build, because the point is the work, not the product.
As I recall the article, highways aren't so good, because once you've build a highway from A to B, there's not much point to build another one. But luckily if you leave them to degrade for a while, you have a fair bit of work to do to restore them.