As Lt. Hanley lay under the beam that traps him, there is a flashlight that appears and disappears on his chest.
Vic Morrow has a short, military haircut, the shortest he wears in the series.
There are two German phrases written on the unexploded bomb. One is tod den eindrind which translates to Death to the invader/intruder. The other appears to be Kuss für Churchill which translates to Kiss for Churchill.
The record in the bar is the same record played by the women in both The Battle of the Roses (1963) and Weep No More (1964).
When Hanley and the nurse introduce themselves, she gives her full name, Anne Farrell, and he introduces himself as Lt. Hanley. A future episode will reveal his first name is Gil, probably the short form of Gilbert.