The army has not yet proffered an explanation of how and why the accident happened.

军队还没有提供对该事故如何发生以及为什么发生的解释。

《柯林斯英汉双解大词典》

The grandfather's strong voice was heard: "Why doesn't the army go forward?"

爷爷洪亮的声音传来了：“为什么军队不前进了？”

youdao

That is why I am such a strong supporter of accelerating the expansion of the Afghan army.

这也是我为什么坚决支持加快阿富汗扩军的速度。

youdao

This attack was conducted with scant deliberation, and it is unclear why the Army did not investigate it.

NEWYORKER: No Secrets

The reason why the Army ended up in charge of strategic defenses (to use Cold War military parlance) was mainly bureaucratic.

FORBES: Missile Defense Becomes A Navy Mission

For now, there seems no reason why the army should seek an accommodation with those agitating for change outside the system.

ECONOMIST: A survey of Indonesia