David's brother Arch McCaskill also served with the 28th Māori Battalion.
From the 28th Maori Battalion war diary, January 1944
"Field Return of Other Ranks
C: Description of other ranks whose return to the unit is particularity requested.
?, Pte McCaskill D, NZ Maori Inf, At NZ Maori Trg Depot.”
Archives New Zealand, R23517745, ADQZ 18886,WAII 11666, DA 68/1/49