A defensive obstacle made by laying felled trees on top of each other with branches, sometimes sharpened, facing the enemy.

鹿砦，鹿角栅，铁丝网：用伐倒的树木排成的防御障碍，带枝杈的树端相互迭放面向敌人，有时也将枝杈削尖。

youdao

The traditional answer is that These guys actually did press up against the rows in front of them And that this provided a momentum That gave the front line an advantage in beating the enemy facing them.

传统的回答是,他们实际上是在推挤前面几排友军,为其提供一种动力,使前线在与对面的敌人交战时具有优势

耶鲁公开课 - 古希腊历史简介课程节选

Hours before Mr Powell landed in Delhi, the new Indian Defence Minister, George Fernandes, warned that India would be ruthless and would stop at nothing in facing the enemy.

BBC: Analysis: India firm over Kashmir

Now they're facing this unseen enemy in the form of mobile phone masts.

BBC: NEWS | UK | Phone masts 'confusing' pigeons

Earlier this month the Rwandan government denied sending its own troops to help track down these rebels, but the two governments admit to facing a common enemy.

ECONOMIST: Burundi: Murder and manhunts | The