self-aligned bearing

non-aligned state

field-aligned

logistically self-sufficient (self-supporting)

wind relative bearing / wind-relative bearing

FH70 field howitzer (towed / self-moving)

M109 Paladin (155mm Self-Propelled Howitzer)

medical self- and buddy-aid

right of collective self-defense

right of self-defence

scuba (Self-Contained Underwater Breathing Apparatus)

self presenters

self-aid and buddy care

self-binding system

self-contained breathing apparatus (SCBA)

self-contained hydraulic system

self-contained unit

self-contained weapon

self-deactivation

self-defense

self-defense training

self-destroying fuse

self-destruct mechanism

self-homing

self-image

self-inflicted wound

self-loading

self-moving

self-propelled (SP)

self-propelled air defense system (SPAD)

self-propelled anti-aircraft gun (SPAAG)

self-propelled anti-tank missile system

self-propelled artillery regiment