Firepower scopes of many air defence groups are overlapping, and firepower relation is complicated in densely-deployed group army regional air defence system.

密集部署的集团军区域防空体系，各防空群火力范围相互重叠，火力关系复杂。

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A group of one thousand soldiers went to Harpers Ferry,Virginia, where the Union army had a gun factory and arsenal.

VOA: special.2009.08.20

This was the group from McClellan's Army of the Potomac, led by Fitz John Porter.

VOA: special.2009.09.24

A small group of Mormon men attacked and destroyed the army's supply wagons.

VOA: special.2009.06.04

According to an Army report, the 19-year-old, from a hacker group the Army identified as Global Hell, changed some of the page's content and gained access to an unclassified network.

CNN: Army Web site ditches NT for security reasons

But the indigenous group says army checkpoints are a magnet for rebel attacks, heightening the chance of the Nasa being caught in crossfire.

BBC: Indigenous Colombians free soldiers held for 24 hours

' But such battlefield clairvoyance, which he had occasionally displayed as a corps commander in Tunisia and Sicily, often eluded him as an army group commander.

WSJ: Book Review: The Guns at Last Light