Continuity mistake: A montage scene of newspaper headlines early on has March 12, 1939 as the date. Much later in the film, Jude Law asks Gwyneth Paltrow the date so he can calculate the position of a star. She responds "March 2" but there is absolutely nothing to indicate that nearly a year has passed.
Trivia: Totenkopf (German for "death's head") is a military insignia featuring a skull above crossed bones and that the lower jaw bone is absent. Today the insignia is particularly associated with Nazi Germany's elite soldiers who served in the 3rd SS Panzer Division (Death's Head Division) in World War II, but it has its origins in cavalry of the Imperial Prussian army.