Shield. Green and gold (yellow) are the colors traditionally associated with Military Police units The helmet refers to Athena, the goddess of wisdom and war, and is also seen on the California state seal The plume color symbolizes courage The diagonally crossed key and halberd, and lantern are all tools of the watchman, referring to the detention capabilities of the 143rd Military Police Battalion The orle/border further alludes to the detention aspect of the unit, and the gold is for excellence
Crest. The crest is that of the California National Guard