The title of the episode, "Hill 60", probably refers to the WWI Battle of Hill 60, where poison gas was used. Shortly after and close by, The Second Battle of Ypres was the first large scale use of poison gas by the Germans, specifically chlorine gas.
Jonas quotes "The boy stood on the burning deck...", the opening line of the poem "Casabianca" by Felicia Dorothea Hemans. It tells the story of a brave young sailor who fatally stays at his post while being overwhelmingly attacked.