supply line
From Longman Dictionary of Contemporary Englishsupply lineˈsupply line noun [countable usually plural] the different ways, places etc that an army uses to send food and equipment to its soldiers during a war the threat to supply linesExamples from the Corpussupply line• McCann got tighter to Vieira, and Arsenal's supply line was cut.• And you've become part of the supply line now: selling on to finance your need.