On the battlefield of war certain changes in reality could be predicted - from seasonal opportunities to covert advantages.

战场上的某些变化 - 从季节因素到潜在优势 - 实际上是能够被预测的。

youdao

Early in the Galactic Civil War, he was put in charge of covert operations in and around the Alderaan system.

银河内战早期，他在奥德朗星系内外负责秘密行动。

youdao

Indeed, it was waged everywhere precisely because the threat of nuclear war was so terrible: Covert warfare became a prudent alternative.

FORBES: What Happened To The American Declaration Of War?

Early in the decade, Coward undertook a number of covert intelligence-gathering missions for a war that he was sure was coming.

ECONOMIST: Collected letters

Kennan gave counsel to the Administration during the Korean War, and was instrumental in setting up the covert-operations wing of the Central Intelligence Agency.

NEWYORKER: Getting Real