It is the most junior of the warrant officers, and holders of this rank are given appointments such as company sergeant major.
The rank was newly introduced on 14 May 2009,[1] and went into effect on 1 April 2010, as part of a revised career structure for warrant officers.
[2] The rank insignia is similar to the one for second warrant officer, although the former has a finer chevron.
Master sergeants are promoted to third warrant officer after attending the 3WO Professional Leadership Course.
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