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Military History
Comer Plummer III
The Walls of Constantinople For almost 1,000 years the wall of Constantinople defended Western Christendom -- only to be compromised by Crusaders and finally breached by Turkish cannons. mark for My Articles similar articles
Military History Quarterly
Autumn 2005
Jonathan Phillips
Christian vs. Christian in the Fourth Crusade The chance to unify the faithful -- and gain a strong ally -- led to the conquest of Christendom's leading city. mark for My Articles similar articles
America's Civil War
July 2007
Joseph G. Bilby
Load the Hopper and Turn the Crank: Rapid-Fire Guns of the Civil War Coffee Mills, Requa Batteries and Gatling Guns, though imperfect, were the first field-tested machine guns in world history mark for My Articles similar articles
Popular Mechanics
May 2004
Paul Eisenstein
World's Largest Gun Not as mobile as it appeared, the Gustav Gun was a logistical nightmare. For starters, it required a 500-man crew. mark for My Articles similar articles
This Old House
John D. Wagner
Hold the Dirt A retaining wall can hold back a hillside and turn steep slopes into living space --- if you pay attention to the basics. mark for My Articles similar articles