Paul Calle (American, 1928 - 2010) and Chris Calle (American, B. 1961) "Submarine Warfare Extends the Reach of War" Signed lower right. Original Mixed Media painting on Illustration Board. This painting originally appeared on the Republic of the Marshall Islands 60c Submarine Warfare Extends the Reach of War stamp issued October 15, 1997. On May 7, 1915, hostile German action made a critical impact on America's role in World War I -- the first global war. While cruising through clear waters off Old Head of Kinsale, Ireland, the German submarine U-20 spotted the British Cunard Liner S.S. Lusitania returning to Liverpool from New York. Speeding toward the liner, the German sub immediately fired several torpedoes that struck the sides of the Lusitania. Severely damaged, it sank within 20 minutes, taking 1,198 people to the bottom, including 128 U.S. citizens. Due to the public outcry that resulted from the vicious assault on the Lusitania, along with blatant German submarine attacks on unarmed American vessels that amounted to undeclared war, the U.S. ultimately joined Britain and France in the fight against Germany. Image Size: 10.75 x 14.25 in. Overall Size: 14.25 x 22.25 in. Unframed. (B15754 / B15755) See More