Guardian: Oil Surging price of oil forces US military to seek alternative energy sources Fiscal reality is dawning as US jets and warships trial alternative fuels in bid to end military’s costly dependence on oil * US navy completes successful test on boat powered by algae It’s a secret just how much oil the US military uses, but estimates range from around 400,000 barrels a day in peacetime – almost as much as Greece – to 800,000 barrels a day at the height of the Iraq war.This puts a single nation’s…