Scorched-earth warfare against civilians became the template for later U.S. overseas interventions.

Evidence

In the Civil War, these methods played a prominent role on both sides. Confederate regular forces, Confederate guerrillas such as William Quantrill, and General Sherman for the Union all engaged in waging total war against civilians. The pattern would continue in US military interventions overseas, from the Philippines and Cuba to Central America, Korea, Vietnam, Iraq, and Afghanistan. — Roxanne Dunbar-Ortiz, An Indigenous Peoples’ History of the…, 224

Categorization

• XREF: Extends the frontier genocide thesis into 20th-21st century U.S. military history — a through-line from Indian wars to modern counterinsurgency. — connects to: Ramstein is the largest U.S. base amid fifty thousand Americans abroad; The United States offered other nations a template of propaganda and punishment to emulate
• corroborated: 2 independent passages support this claim — Roxanne Dunbar-Ortiz, An Indigenous Peoples’ History of the…, 224