Donald Trump’s war on Iran has driven the US military into a severe financial crisis, with the US navy forced to transfer money from its payroll and other sources to cover the costs of combat, according to documents obtained by the Guardian, and interviews with navy officials, contractors and defense analysts.

The US-Israeli operation, which has depleted US munitions stockpiles and prompted retaliatory Iranian strikes that have wrecked strategic bases across the Middle East, is piling pressure on budgets across the military.

One Pentagon memo about navy funding seen by the Guardian warns that there are “shortfalls in payroll” accounts due to the department “raiding” them to fund combat operations.