while a tugboat dispatched from land was still about four ti

英语翻译
...on a tugboat to Russia,for example,where he sees World War II duty and enjoys a touching tryst with a lonely woman.
这句话怎么翻译呢.duty在这里是指服兵役还是责任呢.电影里好像主人公确实做了二战的佣兵
以下是全文.
Old age,Mr.Bernstein said in Citizen Kane,is the only disease you don’t look forward to beingcured of.Not so Benjamin Button,who was born an old man and got younger each
day for the rest of his long life.As the hero of F.Scott Fitzgerald’s 1922
short story,he was a comic-pathetic figure whose reverse internal clock set
him up for a string of triumphs and gaffes.As played by Brad Pitt in the
sprawling,enthralling movie version directed by David Fincher (Se7en,Zodiac),
this New Orleans native is a fellow of sweet disposition who mostly goes where
chance propels him—on a tugboat to Russia,for example,where he sees World War
II duty and enjoys a touching tryst with a lonely woman (Tilda Swinton).He
does have one grand passion:Daisy (Cate Blanchett),whom he meets when she’s a
child and connects with as their live unfold in opposite directions.