Ich hatt' einen Kameraden
"Der gute Kamerad" ("The Good Comrade"), also known by its opening line as "Ich hatt' einen Kameraden" ("I had a comrade"), is a traditional German soldiers' lament. The lyrics were written by German romantic poet Ludwig Uhland in 1809.
Source: Wikipedia — Ich hatt' einen Kameraden (CC BY-SA 4.0)