This regiment 2/3 Anti-tank later was known as the 2/3 Tank Attack Regiment. The colors are sometimes shown as the reverse of the above.http://www.awm.gov.au/collection/records/awmohww2/army/vol1/awmohww2-army-vol1-app4.pdf The "T" shape of the colour patch denotes the Regiment served at Tobruk Wooden Plaque 15cm x 13cm with insignia of Plaque Royal Regiment of Australian Artillery 2/3 Anti Tank Regiment Plaque Royal Regiment of Australian Artillery 2/3 Anti Tank Regiment 2/3 anti-tank regiment, 2/3 tank attack regiment, tobruk