September 14, 2011 By Chad Vander Veen
Answer:
The tank. The British Mark I (above) was the world's first combat tank. Slow and highly unreliable, the first tanks were used primarily to assist in trench warfare by breaking through barbed wire defenses. 49 tanks were available for the battle, though only half those were mechanically sound enough to be operated.
You may use or reference this story with attribution and a link to
http://www.govtech.com/newsletters/Question-of-the-Day-for-091511.html