If country government want higher taxes or make some larger country debt, it can buy more weapons, for example some extra submarines. For example US Virginia submarine costs 2.68 billions USD. The same weight gold - 7900 tons costs around 0.3 billions USD only. See link here -
https://en.wikipedia.org/wiki/Virginia-class_submarine. If Donald Trump will make some new submarines, it will cost some more billions USD from taxpayers.
well thats the sad part. imagine the good that huge amount can bring if it were to allocated to other more important things like education, food and healthcare. that would certainly be worth every cent of every taxpayer. though there's nothing wrong with strengthening the armed forces for defense, it would be best if we could look also to other aspects that can make the lives of people better