fortify

to protect a place against attack by building strong walls, towers, or other structures around it เสริมความแข็งแกร่ง

Early yesterday, the special task force fired pepper spray into the heavily fortified entrances of the so-called Tao Pun casino before they forced their way into the building.

300 more troops from the 11th Military Circle were added to those already deployed at the Lat Krabang industrial estate to fortify the estate's 3.2m-high flood walls.

Phnom Penh has reportedly removed soldiers and tanks from its Preah Vihear military base, next to the disputed main border area near Si Sa Ket province, to fortify its troops near the two temples at the Thai-Cambodian border in Surin's Phanom Dong Rak district.