City of thieves, by David Benioff

City of thieves is a World War II story that takes place in Russia during the Siege of Leningrad. The Germans have Leningrad cut off, and the people still surviving are starving and desperate. Two young men, one an army deserter and one arrested as a looter, are about to be executed when they are given a reprieve. Lev and Kolya can find a dozen eggs for an NKVD colonel to use for his daughter's wedding cake and live. Or fail, and die. So the two set off on an impossible 4 day quest that takes them through the frozen city, through the surrounding countryside, and eventually behind German lines in search of the eggs that will save their lives.
This is part war tale, part coming of age story, part adventure and love story. It is brutal and funny, touching and always entertaining.