While patrolling off Fremantle, the
Pioneer subsequently captured the German merchant vessels Neumunster and
Thuringen, which were unaware of the outbreak of war.
Although intended to be part of the
escort of the first AIF convoy, which left Albany on 1 November 1914,
Pioneer had to withdraw due to engine problems. On 9 January 1915 she
departed Fremantle for German East Africa to take part in operations
against the German cruiser SMS Koenigsberg, which had sought refuge up
the Rufigi River The role of the British fleet gathered off East Africa
was to prevent the Koenigsberg from breaking out of the river, and to
prevent supplies being brought in by sea for either her, or the German
forces ashore.
Koenigsberg was destroyed by British
monitors on 12 July 1915 but Pioneer remained on station, continuing her
blockade duties and bombarding targets ashore. Pioneer eventually
returned to Australia in October 1916 and was paid off. She was sold in
1924 and scuttled off Sydney Harbour in 1931.
Pioneer, obsolete and decrepit, saw
more actual combat than any other Australian ship in the First World
War.
Casualties
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