Unfortunately I don’t think a majority of either party wants to reign in military spending, considering every admin including Obama and Biden has increased it since Carter, even though likely granting such a blank check is financially irresponsible (i.e. trillions unaccounted for in budget audits [3]). Both parties just want to please that bloc of votes, because it also has ripple effects on the rest of the nation’s votes to be seen as “good on military”.
I personally think our military could be just as effective if we tightened the wallet, but I don’t think either party actually wants to.
[1] https://www.economist.com/united-states/2021/10/14/military-... and https://www.nbcnews.com/think/amp/ncna1245542
[2] https://news.gallup.com/poll/118684/military-veterans-ages-t... (2009, but the trend has only gotten deeper)
[3] https://www.reuters.com/world/us/pentagon-fails-audit-sixth-...