M24 "Stielhandgranate"

The Modell 24 Stielhandgranate (also known as: M24) was the standard hand grenade of the German Army from the end of World War I until the end of World War II. The very distinctive appearance led to its being called a "stick grenade", or a "potato masher" in British Army slang, and is today one of the most easily recognized infantry weapons of the 20th century.

This type of grenade, features a high explosive charge encased in a thin sheet steel. This is an example of an "offensive" grenade(relying on blast effect), rather than "defensive" (fragmentation) grenade. Particularily useful for clearing out entrenched infantry. Not useful on vehicles.

Other Uses
The grenade could be used in an improvised "bundle" style with another four/six explosive heads (without their sticks) wired around the central stick grenade. These were known as Geballte Ladung. (literally "balled charge" or "concentrated charge"). This type being useful against vehicles of all sorts