部队接到命令，开始撤退。

Bùduì jiē dào mìnglìng, kāishǐ chètuì.

The troops received orders to begin the retreat.

在战争中，有时不得不撤退。

Zài zhànzhēng zhōng, yǒushí bùdé bù chètuì.

In war, sometimes there is no choice but to retreat.

民众纷纷撤退到安全地区。

Mínzhòng fēnfēn chètuì dào ānquán dìqū.

The civilians are evacuating to safe areas.