http://portal.ins-cr.com/Social/Bombero ... C3%B3n.htm
Bombero I - no rank insignia
Bombero II - empty square with gold border
Bombero III - gold firetruck inside the square with gold border
Subjefe de Estación - 1 bugle inside the square with gold border
Jefe de Estación - 2 bugles inside the square with gold border
Jefe de Zona - 4 bugles inside the square with gold border
Director - 5 bugles inside the square with gold border
See the website for how the rank insignia looks.
The Costa Rica Fire Corps was created in 1925 and currently employs 382 full time and 1,000 part time firefighters.