This is the tale of the W3 Assault Pioneer who destroyed a Nui Dat 'long drop' toilet with a grenade. Pioneers were infantry field engineers, considered very capable around tools, using explosives, and when doing field engineering tasks.
2RAR were thought of as a dull battalion, without imagination, and since lacking in original thought were likely to follow the textbook slavishly. Here's an example of that 'textbook' mentality.
Triumph or recovery from tragedy can both make a hero, but Opotiki identity Ruka Hudson qualifies on both counts.