The Passing Bells - Season 1 Episode 2

Tommy and his friends are ordered forward wearing cumbersome gas masks which they tear off as they restrict their vision. However there is a gas attack and, having being rescued by a married soldier who takes a bullet, Tommy recuperates in a field hospital where he falls for Joanna, a Polish nurse. After hand to hand fighting against the Russians on the Eastern front Michael returns for a three day leave with his parents, who are suffering the privations of the war. He marries his sweetheart Katie but is soon back in France and for him, as with Tommy, the respite is over.