** Shares of Australia's Ventia Services Group VNT.AX rise as much as 4.6% to A$5.23, their biggest pct gain since April 10
** Essential infrastructure services provider says it has been awarded two Base Transformation Services packages by the Australian Department of Defence worth A$2.7 billion ($1.78 billion)
** Contract for an initial term of six years, with two extension options ranging from one to three years each - VNT
** Co says it will deliver living and working services in the Northern Territory, Victoria and Tasmania and property and asset services in Western Australia, Victoria and Tasmania
** Around 4.3 mln shares change hands, nearly 2.5x 30-day average
** VNT, YTD up 40.4%
($1 = 1.5126 Australian dollars)
(Reporting by Keshav Singh Chundawat in Bengaluru)
((Keshav.SinghChundawat@thomsonreuters.com))