Bush hat : Major C H Ducker, B Company, 4 Battalion, Royal Australian Regiment

Jungle green cotton Australian Army bush hat with blackened brass ventilation eyelets set around the crown. The hat is reversible, and is currently displayed inside-out. A strip of pale yellow cotton tape has been stitched around the crown to form a series of camouflage loops. These loops duplicate those carried in jungle green fabric on what would normally be the outside crown, but is now inside the hat. Written upside-down on the yellow tape in black felt marker are the letters 'B O C' (presumably for Officer Commanding B Company) and faintly on the crown, the word 'Ducker'. Inside the hat is a 65 mm 'X' shape cut from blue fabric and stitched to the left hand crown.

The hat was orginally worn with blue 'X' Company marker on the outside, aligned to the centre front. Later in the tour a decision was made to use the yellow coloured band only, yellow indicating 4 RAR, and hats were reversed to show this, leaving Company markers on the inside .

Standard pattern jungle green cotton Australian Army bush hat worn by Major Claude Henry Ducker, MC, while serving as a company commander with 4 Battalion, the Royal Australian Regiment during the Confrontation in Borneo, 1964-66. The outside front of the crown features a sewn on blue cotton tape 'X' which Ducker devised as a company identification mark for B Company of 4 RAR. The inside of the hat has a light yellow coloured band sewn around the crown, which was used as an identifying mark for the battalion.