The Czech song was called Voják which translates as Soldier. I wouldn't call it a lullaby - the first verse translates to

The translation of the three verses:

(1) When I didn't die in the war, I also will not die back home.
(2) When I didn't die on the French meadows, I will not die by my sweetheart.
(3) When I didn't die alongside the Austrians, I will not die with my lords.