Tommy: (Refering to The War on Terror) Seems like there's always a war somewhere.
Tosh: That's not exactly a war.
Tommy: Looks like one. First year they woke me up... 1919... they told me it was all over. We won. “The war to end all wars,” they said. And then three weeks later, you had the Second World War. After all that... Do you never wonder if we're worth saving? The human race?
Tosh: Yes. I think we're worth saving. Wars and all.Tommy, a shell-shocked soldier from World War I, is the only hope for repairing a rift in time. So Torchwood freeze him for 90 years, waking him up once a year to check his vitals. Tosh has developed a bit of a crush on him in the four days she's known him.This year, during his annual walk about town, Tommy finds out that he has to go back to 1918 the next day. Jack allows him to go home with Tosh so they can enjoy one night together. In a rare moment of sincerity, Owen tells Tosh to be careful, because he knows how much it hurts when people head home to their own time again.Ianto and Jack have been dating for a while now, and they share a sweet kiss when Jack says he doesn't want to go back to the 51st century any more.Tommy is brought back to 1918 to repair a time gap. He also immediately becomes shell-shocked again. Tosh gets through to him and convinces him to use his time repair device, even though she knows he'll be shot for "cowardice" a few weeks later.
— Tosh assures Tommy Brockless humanity is still worth having around