(ISABELLA FRANCO) Barbed wire: was used extensively in the trench warfare of world war one. It was laid, several rows deep, by both sides to protect the front line trench. Wire breaks were placed at intervals to allow men access to no man’s land. However, attackers had to locate the wire breaks and many men lost their lives by becoming entangled in the wire and shot.WW1 Trenches: The Heart of Battle. (2018, June 11). Retrieved October 10, 2018, from https://www.historyonthenet.com/ww1-trenches-what-is-a-trench/ ![Barbed-wire_2871765c](attached://931df4b6ef0b6d99297cb97eb013d34d 150x93)