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In page Royal Regiment of New Zealand Artillery:

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As part of 1ATF, the New Zealand battery is remembered well for its role in the Battle of Long Tan on 18 August 1966, during which it played a key role in supporting the outnumbered Australian infantry from D Company, 6 RAR hold off a regimental-sized Viet Cong force.[9] Three New Zealand artillery Forward Observers attached to D Company controlled the guns of their own battery, the two Australian batteries, and two American batteries - a total of 24 guns, in support of themselves and the rest of D Company for more than 3.5 hours firing 6-8 rounds per minute almost non stop.[10]