The rules that use the vocabulary item "recon" are:
battalion recon
brdm2 recon four
brdm2 recon six
division recon
swa battalion recon
brdm2 recon
recon
brdm recon
brdm2 recon
swa brdm recon
swa brdm2 recon
recon
recon
brdm recon
brdm2 recon
swa brdm recon
swa brdm2 recon
recon
recon
recon
brdm2 recon
recon
recon
brdm recon
brdm2 recon
swa brdm recon
swa brdm2 recon
battalion recon
brdm2 recon four
brdm2 recon six
division recon
swa battalion recon
battalion recon
brdm2 recon four
brdm2 recon six
division recon
swa battalion recon