| H&FS | headquarters and
facilities sub-system | |
| HAGS | commander
Hellenic army general staff | |
| HANE | high altitude
nuclear event | |
| HARM | high-speed
anti-radiation missile | |
| HASSO | host ADP site
security officer | |
| HAU | host attachment
unit | |
| HCD | hard copy device | |
| HCDA | high capacity
digital access | |
| HCI | human computer
interface | |
| HDA | Heterogeneous
Data Accessor | |
| HDB | home defense
brigade | |
| HDLC | high level data
link communication | |
| HDLC | high level data
link control | |
| HDRP | hypothetical
digital reference path | |
| HDX | half duplex | NACISA/APD/04.07.00(95)001 |
| HEDICS | Hellenic national
defense integrated communication system | |
| HEL | high energy laser | |
| HF | high frequency | |
| HFA | Hellenic first
army | |
| HGI | host guard
interface | |
| HIDECON | hierarchially
decentralized control of the network | |
| HILEX | high level
exercise | |
| HIT-B | | Ex Strong Resolve
95 |
| HL | hotline | |
| HLDD | high level design
document | STC CSNI final
report 22/9/95 |
| HLI | | |
| HLWF | high level
wargame facility | |
| HM | hub manager | Ex Strong Resolve
95 |
| HML | hardware
maintenance level | |
| HN | host nation | NACISA USD
23.01.00(93)01 |
| HNDGS | commander
Hellenic national defense general staff | |
| HOD | head of
delegation | |
| HOL | high order
language | |
| HPRP | high performing
reporting post | early warning |
| HQ | headquarters | |
| HQG | high quality
graphics | DT=SVC+SVTC+HQG |
| HRC | hybrid ring
control | |
| HRDL | hypothetical
reference digital link | |
| HRDS | hypothetical
reference digital section | |
| HSC | headquarter
support command | |
| HSO | headquarter
suignal officer | |
| HTML | HyperText Mark-up
Language | W3C |
| HTT | highly
transportable satellite ground terminals | |
| HTTP | HyperText
Transfer Protocol | |
| HW | hardware | |
| HYPSR | half yearly
project status report | NACISA |
| HYSIR | half yearly
system implementation report | |
| HYTIME | hypermedia/time-based
structuring language | |