Where does “bivac” come from?

bivac (French) comes from Alemannic German Biiwacht, from Alemannic German bii- — by-.

Ancestry of “bivac”, step by step

StepLanguageWordMeaning
1Alemannic GermanBiiwachtreinforcements for a guard, city watch, etc
2Alemannic Germanbii-by-
Every word from Alemannic German bii- →Every word from Alemannic German Biiwacht →