BANGKOK (AP) — Six months into an offensive against Myanmar ’s military government, opposition forces have made massive gains, but civilian casualties are rising sharply as regime troops increasingly turn toward scorched-earth tactics in the Southeast Asian country’s bitter civil war.

There is pressure on all fronts from powerful militias drawn from Myanmar’s ethnic minority groups and newer resistance forces. Troops are retaliating with air, naval and artillery strikes on hospitals and other facilities where the opposition could be sheltered or aided.

“When the mass of people rise up against them, I think it terrifies them,” said Dave Eubank, a former U.S. Special Forces soldier who founded the Free Burma Rangers, a humanitarian aid organization that has provided assistance to both combatants and civilians in Myanmar since the 1990s.