The Last Oilman. Deep in the Ashes, #1

Europe fell eleven months ago. America kept pumping. Cal Bridger owns an aging West Texas oil field built on manual valves, forgotten pipelines, and people who know every mile of pipe beneath the caliche. When a night pumper dies in a fire someone engineered-and emergency orders begin moving essential workers and their families into enemy hands-Cal understands the truth. The invasion did not begin at the border.
It began with a list. Now foreign forces are driving west, and Bridger Operating has been marked for capture intact. The oil beneath Cal's land can keep an army moving. His daughter holds the authentication system that could unite the surviving authorities across Texas. And the families gathering behind his gates have nowhere else left to go. To hold the field, Cal must keep the pumps, water, power, and people alive while an enemy commander turns America's own systems against them.
Every gallon matters. Every name goes in the ledger. And when civilians are placed in front of the advancing guns, Cal must confront the decision that has haunted him since Iraq. Texas does not need Cal Bridger to save it. It needs him to make the invasion expensive. The Last Oilman is Book One in Deep in the Ashes, a hard-hitting post-apocalyptic survival series about family, sacrifice, and the people who keep a country alive after its leaders fail.