Major Claude Ducker graduated from The Royal Military College, Duntroon, in December 1955. Following a number of regimental postings he was posted to South Vietnam arriving in January 1969. He was posted to 5th Battalion, The Royal Australian Regiment in April 1969 as Officer Commanding C Company.
In eight months of continuous operations Major Ducker has commanded his company with distinction. His professional skill and meticulous planning, especially in ambushes and attacking enemy camps have resulted in marked success for his company and minimum casualties to his troops.
Through a continuous display of personal courage and example he has demanded and obtained the highest standards from his men in the field.
He has never hesitated to place himself and his company Headquarters in the most dangerous positions from which he could control actions. His headquarters has been involved in several close contacts with the enemy. His personal actions, tenacity and aggressive determination reflect great credit on. himself and The Royal Australian Regiment.