Robuta

https://www.oocities.org/fort_tilden/69thaaa.html The 69th Anti-Aircraft Artillery (AAA) Gun Battalion (90mm) arrives at Fort Tilden. Fort Tilden History Web Page anti aircraft artillery https://www.awm.gov.au/collection/C1361252 AWM52 Subclass 4/21 - Anti-Aircraft Coastal Artillery | Australian War Memorial 4 21 anti aircraft coastal artillery subclass