 Complete the following phrase:  As the Winter War began in 1939, Hallamaa and the SIGINT assets under his command were reorganized as the Signals Intelligence Office . The Signals Intelligence Office was able to intercept Soviet messages and inform Colonel Hjalmar Siilasvuo of the enemys movements during the Battle of Suomussalmi. With the intelligence, Colonel Siilasvuo had the initiative and could pocket and destroy the Soviet 44th Rifle Division at 