What is the meaning of frontliner?

Was Ft Donelson from north or south? In evony how do you ask people to join youre alliance? Where did Navajo code talkers live during world war 2? When did the US enter the cold war? Where is Valley Forge? What branch of the us military had only 50 soldiers when ww1 broke out? What system of rationing was designed to limit? How was hitlers behavior in school? How did mutual distrust and misunderstanding fuel the orgins of the cold war? The cold war referred to unfriendly relations between the? What was the first military challenge of the cold war? What was the Japanese response to the US oil embargo in 1941? Why did one third of all Americans die at the beginning of world war 1? What were the causes of the Battle of Tours? Why was Magellan and his men welcomed by the chieftains and their people? How many Texans served in World War 2? What prussian officer trained troops at Valley Forge? How many 18 year olds have died in the 21st century wars? To ensure a united effort under one responsible commander for every objective is the purpose of which principle of war? How did the alliances aim to keep peace?