Dulce et decorum est pro patria mori is from a poem by Horace that was often quoted by World War I era patriots, and means roughly "it is sweet and fitting to die for one's country." Owen describes combat as far from heroic or glorious, with soldiers bent over "like beggars" by their packs, "knock-kneed," "cursing through sludge." Then the gas attack comes and one young man who is unlucky enough not to get his mask on in time suffers a horrible death, literally drowning in the fluid from his lungs. Those back home in Britain, claiming that war was heroic and patriotic, Owen asserts, would feel differently if they saw the realities of war--for him it was "blood frothing" from the boy's lungs with "white eyes writhing in his face." In short, like others who followed, most notably Erich Maria Remarque, Owen tries to use gritty realism to portray the horrors of war, a very effective means of conveying an anti-war message.