its not just vat its duty as well which includes things like petrol, alcohol and tobacco.
go and look for the rates at which things are then work out what you actually spend in the pound taking off the vat, duty, NI, income tax. receipts dont show duty they only show vat.
for instance petrol/diesel is 57.95p+vat for every pound spent at the pump
when you start working things out for a weekly/monthly expenditure its shocking just how much the Gov get of your £1 that you have worked for. well its exactly the same for unemployed except the Gov give them the £1
duty/vat
https://www.gov.uk/tax-on-shopping/alcohol-tobacco
as for military expenditure well they dont get anything back in the price of a bullet once fired or weapons sitting idle do they so the figures are much higher. yes personal spend money so their vat/duty goes back into the system but all the things they use dont. its the same with the NHS.