initial radiation

initial nuclear radiation

initial airhead

initial assault

initial assault landing

initial data

initial element

initial geodetic data

initial operational capability (IOC)

initial path sweeping

initial period of war

initial point (IP)

initial railway

initial sight setting

initial situation

initial training

initial velocity

initial-entry force

initial-entry training (IET)

Low-Rate Initial Production (LRIP)

pre-initial planning conference

target approach point; initial point (IP)

initial / boost phase of flight

initial round

initial bomb release line

initial enemy contact

initial tactical deployment positions

abbreviated preparation of initial data

clearance of the initial point

initial air space

initial attack

initial battle position

initial caliber