http://www.astronautix.com/lvs/v2cology.htm

1944 December 30 - Launch Site: V-2 Gruppe Sued. Launch Vehicle: V-2. 
3 V-2's launched at 1 X Liege, 2 x Antwerp Nation: Germany. Agency: V-2 Bty 3./836. Apogee: 90 km (55 mi). Liquid oxygen shortage forced one rocket to be targeted on Liege. References: 726

http://books.google.com/books?id=9WZ_z55WC1MC&pg=PA284&lpg=PA284&dq=%22v+2%22+liege+hospital&source=web&ots=eGL59kNKl9&sig=t2Q86mp_bp67ISwk4XsEbiXNMrM#PPA284,M1

Impact: The History of Germany's V-Weapons in World War II By Benjamin King, Timothy Kutta

On January 2, a V-2 hit a hospital train at Liege, demolishing three cars, damaging five more and shattering all the glass in another train