Various Colour Patches for Identification Revisited

[dobw]

After I posted the small lot of colour patches I acquired last month and requested help identifying them, a friend gave me about half a dozen more, plunging me back into the unknown. Once again, I tried the internet and have tentative IDs, but would appreciate the confirmation or corrections of members here:

1. Headquarters, 7th Australian Division
2. Schools and Training Units, Second Australian Army
3. 3rd Australian Corps – Royal Australian Engineers
4. 1st Australian Corps – Australian Army Ordnance Corps
5. 3rd Australian Corps – Australian Army Ordnance Corps
6. 3rd Australian Corps Troops – Australian Army Service Corps
7. Field Survey Units, RAE

Your assistance is greatly appreciated!