Army officers discovered that the wrist watch was most practical for active combat.

军官们发现，腕表在战斗中最实用。

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"Crossing the threshold to active combat was an important psychological moment, " Dr Stelzenmueller said.

BBC: German army prepares for new global role

In its legal submissions, the US justice department argues that because Afghanistan is an active combat zone it is not possible to conduct rigorous inquiries into individual cases and that it would divert precious military resources at a crucial time.

BBC: Ex-detainees allege Bagram abuse

"Belmokhtar likely wants to show he is still engaged in active operations and he is not moving away from the fighting - especially at a time when other Jihadists are in active combat against French troops in Mali, " he said.

CNN: STORY HIGHLIGHTS