[atillathenunns]

An interesting family collection you have Bungo, they are all pieces of your grandfather's journey.
If you supply your grandfather's service number, we could possibly put them in the chronological order that he collected them.

Just to add to Tinto's observations.-
“A” could also be a “1st Battalion of the Canterbury Infantry Regiment patch.”
“D” I concur with Tinto, it is a generic grenade badge that was worn in New Zealand on the collars by volunteer ordinary ranks of Artillery and Engineers, and the Wellington Guards wore white metal versions. They were also worn by NZ Territorial ordinary ranks of Artillery, Engineers, Railway Engineers and Signals.

It might be worth posting the "H" cocade on the Wehrmacht Awards Forum if no one here can provide positive id.