As the great Kainamii stated...(NOTE I'M NOT TAKING CREDIT FOR THIS)
Gjallarhorn is 100% American. The -blam!- are you people who are claiming that it's some Norse shit smoking?
G is for Guns
J is for Justice
A is for America
L is for Liberty
L is for more Liberty
A is for Apathy
R is for Religion
H is for Horizontally challenged
O is for Obama/Oil
R is for Redneck
N is for Nothing beats America
Also, more proof that Gjallarhorn is American is the fact that guardians call upon we wielders of the Gjallarhorn to fight their battles for them, or we simply butt in and intervene akin to 'MURICA.
*EAGLE SCREECH WITH NATIONAL ANTHEM PLAYING IN BACKGROUND*
-
Sorry, the ancient Norse have the rights to it. In Norse mythology, Gjallarhorn (Old Norse "yelling horn" or "the loud sounding horn") is a horn associated with the god Heimdallr and the wise being Mímir. Gjallarhorn is attested in the Poetic Edda, compiled in the 13th century from earlier traditional material, and the Prose Edda, written in the 13th century by Snorri Sturluson.