References
http://cf067b.medialib.glogster.com/media/95/95078d5591e9288d06cc2381f046a3ae19229e16cd5c392e80ece2d01bc16b0d/map-of-somme-jpg.jpg
http://www.edupics.com/royal-irish-rifles-at-battle-of-sommes-t8974.jpg
http://www.historylearningsite.co.uk/uploads/pics/somme.1.jpg
http://farm2.static.flickr.com/1275/606531189_9a21060a32.jpg?v=0
http://www.ww1battlefields.co.uk/flanders/images/pass/passendalemap.gif
http://www.firstworldwar.com/battles/somme.htm
http://www.historylearningsite.co.uk/somme.htm
http://www.thecanadianencyclopedia.com/articles/battle-of-the-somme
http://www.edupics.com/royal-irish-rifles-at-battle-of-sommes-t8974.jpg
http://www.historylearningsite.co.uk/uploads/pics/somme.1.jpg
http://farm2.static.flickr.com/1275/606531189_9a21060a32.jpg?v=0
http://www.ww1battlefields.co.uk/flanders/images/pass/passendalemap.gif
http://www.firstworldwar.com/battles/somme.htm
http://www.historylearningsite.co.uk/somme.htm
http://www.thecanadianencyclopedia.com/articles/battle-of-the-somme