Lieutenant Johnston received the Leeuwin Trust Fund Sword for being dux of the Maritime Logistics Officers Application Course in 2019.
Australian and Indian warships have conducted a two-day passage exercise in the north-east Indian Ocean.
Warships from Australia and the Philippines have exercised for the third time in as many months.
HMA Ships Stuart and Arunta joined forces with Japan, South Korea and the United States for Exercise Pacific Vanguard.
HMA Ships Stuart and Arunta sailed in company with ships from Japan, South Korea and the United States in a recent exercise.
HMAS Sirius has proved invaluable during her current international deployment.
The Royal Australian Navy has proven its warfighting capability with devastating effect at Exercise Rim of the Pacific (RIMPAC).
HMAS Hobart has become the first Hobart-class guided missile destroyer to conduct a live fire at Exercise Rim of the Pacific.
HMAS Arunta has successfully fired surface-to-air missiles at Exercise Rim of the Pacific in Hawaii.
The Royal Australian Navy has begun multilateral exercises with warships from Singapore, Brunei and the United States.
Australia, Japan and the US conducted a trilateral passage in the Philippine Sea en route to participate in Exercise Rim of the Pacific in Hawaii.
Seven warships have sailed from Navy bases on both sides of the country to undertake a range of training activities.