front_line has definitions from the field of military
1
[ noun ] (military) the line along which opposing armies face each other

Synonyms

front battlefront

Used in print

("Editorials"...)

They are leaving so fast that the president of the West_German_Employers'_Federation issued an appeal this week to factory_workers in the West to volunteer for six months ' front-line work in factories in West_Berlin .

Related terms

line battlefield

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