0
Code name for Naval Communications Service HQ in Washington DC. aka OP-20-G
The US Naval Communications Service HQ in Washington D.C. code named "NEGAT' in WW2
op 20
Chopin's second Scherzo is op 31. His first is op 20. The meter in the second is presto--both are very fast.
Johannes J. G. Jansen has written:
'Op, op, ten strijde, Jeruzalem bevrijden!' -- subject(s): Crusades