The South Australian Liberal Party was pleased to attend the important unveiling of the Members of the South Australian Parliament Active Military Service Board on Thursday. 

The historic event - which Labor MPs failed to attend because of internal party meetings - coincided with the unveiling of a portrait of Brigadier Arthur Blackburn VC CMG CB ED, who as a Member of Parliament and is cited as being Australia's most notable 'citizen soldier'.

The event paid recognition to all Parliamentarians who have served the state through military service. 

Brigadier Blackburn served in both World Wars, as a qualified lawyer, and founded Legacy and the Returned & Services League (RSL). He was an MP at just 26 years old. 

He also served as the State Coroner between conflicts and was a RSL State President for a short period in his later years. 

Shadow Minister for Veterans Affairs, Adrian Pederick, said he was proud to recognise the efforts of servicepeople with several other Liberal Parliamentarians, including State Liberal Leader David Speirs and Senator Andrew McLachlan CSC who is recognised for his service in Afghanistan. 

"It was absolutely amazing to hear about the life of Brigadier Blackburn who was the first South Australian to receive the Victoria Cross for his service during World War 1," Mr Pederick said. 

"I always enjoy attending events dedicated to our veterans because they are such an important part of our history and deserve to be acknowledged.

"It was disappointing that Labor MPs chose not to attend the ceremony considering the historical significance of the event and given it was held at Parliament House during a sitting week."