The Silent Soldier

"Die deutsche S-Mine (Abkürzung für Schrapnellmine, Splittermine oder Springmine, auch bekannt als Bouncing Betty) ist die bekannteste Vertreterin aus der Minenklasse der Springminen innerhalb der Gruppe der Antipersonenminen."
"The German S-mine (Schrapnellmine, Springmine or Splittermine in German), also known as the "Bouncing Betty" on the Western Front and "frog-mine" on the Eastern Front, is the best-known version of a class of mines known as bounding mines. When triggered, these mines are launched into the air and then detonated at about 1 meter (3 ft) from the ground."