He taught himself to be a pilot. During World War II, he designed a machine used to train military aircraft crews to fire guns at enemy aircraft.

VOA: special.2009.01.14

Would the winner of the war slaughter the enemy that would fall behind or would they give them back?

战争胜利的一方会屠杀对方落在后面的人,还是任其溃逃

耶鲁公开课 - 古希腊历史简介课程节选

The interior minister says, "The enemy has started a guerrilla war."

VOA: special.2009.10.17

Both actions started with the use of ground forces ruled out, saw escalating airstrikes, the indictment of the enemy leader for war crimes, and when hope of a quick solution by airpower faded, the dispatch of attack helicopters to the theatre.

BBC: Why war effort to oust Gaddafi has few options remaining

Learning about the distribution of earthquakes may not prevent the Big One, but for war and terrorism, power-law statistics may teach governments something about how to defeat the enemy, and make war less deadly.

ECONOMIST: Modelling conflict

That edge is the main reason why no U.S. soldier has been killed by hostile aircraft since the Korean War, and no U.S. pilot has been downed by an enemy plane since the Vietnam War.

FORBES: Massive Cost Estimate For Fighter Program Is Misleading