per unit markings:
Type 90 belongs to 1st Company, 71st Tank Regiment, based at Kita-Chitose (71戦-1)
Type 73 belongs to HQ Company, 71st Tank Regiment, based at Kita-Chitose (71戦-本)
AH-1S 73481 belongs to 1st Anti-Tank Helicopter Unit (IATH) (Obihiro), correct to the real helicopter

UH-1J 41855 wears no unit markings, also correct to the real helicopter, which appears to be based at Okadama based on Japanese spotter websites

279okshap said:

per unit markings:
Type 90 belongs to 1st Company, 71st Tank Regiment, based at Kita-Chitose (71戦-1)
Type 73 belongs to HQ Company, 71st Tank Regiment, based at Kita-Chitose (71戦-本)
AH-1S 73481 belongs to 1st Anti-Tank Helicopter Unit (IATH) (Obihiro), correct to the real helicopter

UH-1J 41855 wears no unit markings, also correct to the real helicopter, which appears to be based at Okadama based on Japanese spotter websites

Hey my guy, you are really good at this. I applaud your professionalism. You go so ultra deep it almost makes me curious as to your sources. I'm not questioning them at all, in fact they are so good as to make me jealous.
And do you mind me asking as to your nationality.
I am curious about internet access and blanket denial of either accurate search results or access to certain websites.

CmdrWelkinGunther said:

Hey my guy, you are really good at this. I applaud your professionalism. You go so ultra deep it almost makes me curious as to your sources. I'm not questioning them at all, in fact they are so good as to make me jealous.
And do you mind me asking as to your nationality.
I am curious about internet access and blanket denial of either accurate search results or access to certain websites.

Well that was received poorly.